Mac

Reading and Writing Tools

Applications to edit text, I suggest the open-source editors

Text Editors

Atom - Hackable text editor for the 21st century made by GitHub.
Bear Writer - Beautiful, flexible writing app for crafting notes and prose.
Bootstrap Studio - A powerful desktop app for creating responsive websites using the Bootstrap framework.
Brackets - A modern, open source text editor that understands web design.
Chocolat - Native text editor.
Coda2 - Fast, clean and powerful text editor.
CotEditor - Lightweight plain-text editor for macOS.
Emacs - A popular text editor used mainly on Unix-based systems by programmers, scientists, engineers, students, and system administrators.
LightTable - The next generation code editor.
micro - Modern and intuitive terminal-based text editor.
Nova - Modern, extensible text editor, by the makers of Coda.
ONI - IDE powered by Neovim.
Sublime Text - Sophisticated text editor for code, markup and prose. You'll love the slick user interface, extraordinary features and amazing performance.
TextMate - Editor that brings Apple's approach to operating systems into the world of text editors.
Vim - Highly configurable text editor built to make creating and changing any kind of text very efficient.
Vimr - Refined Vim Experience for OS X.

Office

LibreOffice - LibreOffice is free and open-source software office software. Software is tested and used daily by a large and devoted user community.
OpenOffice - Compatible with other major office suites, Apache OpenOffice is free to download, use and distribute.
WPS - Is a cross-platform office software suite.
Pages Documents that stand apart.
Keynote Build stunning presentations.
Numbers Create impressive spreadsheets.
Microsoft Office Unmistakably Office, designed for Mac.
SoftMaker Office A complete office suite that aims for full compatibility with Microsoft Office documents

Markdown Tools

EME - Open-source Markdown editor with an interface like Chrome.
iA Writer - Writing app with an emphasis on simplicity and design.
LightPaper - Simple, beautiful, yet powerful text editor for your Mac.
MacDown - Open-source Markdown editor for OS X.
Marked 2 - This is the Markdown preview with an elegant and powerful set of tools for all writers.
MarkText - Next generation markdown editor, running on platforms of MacOS Windows and Linux.
Marp - Markdown presentation writer with cross-platform support.
Marxico - Delicate Markdown editor for Evernote. Reliable storage and sync.
MWeb - Pro Markdown writing, and static blog generator App.
TextNut - Rich-format editor featuring Markdown export and Markdown syntax hints.
Typora - Truly minimal Markdown editor featuring seamless live preview.
Ulysses - The Ultimate Writing App for Mac, iPad and iPhone.

Note-taking

Agenda - Date-focused note taking app for both planning and documenting your projects.
Boostnote - Note-taking app made for programmers.
Dnote - A simple command line notebook with multi-device sync and a web interface.
Evernote - Infamous note-taking app, available on many platforms.
FSNotes - File System Notes is a modern notes manager, native on macOS and iOS.
Gooba - Writing app and task manager with a simple and interactive design.
Inkdrop - Notebook app for Markdown lovers built on top of Electron.
Joplin - Cross platform open-source notepad with markdown support and todo list manager with synchronisation capabilities.
MarginNote - In-depth PDF and EPUB reading, learning, managing and note taking app.
Notable - The markdown-based note-taking app that doesn't suck.
Notebook Note-taking app.
Notes - Clean, simple note-taking app.
Notion -Notion is the all-in-one workspace. From notes, tasks, wikis, to database, Notion is all you need. Works great for teams and individuals.
Obsidian - Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
OneNote - Note-taking app by Microsoft.
QOwnNotes - Open-source notepad with markdown support and todo list manager.
Quiver - The Programmer's Notebook, lets you easily mix text, code, Markdown and LaTeX within one note, edit code with an awesome code editor and live preview Markdown and LaTeX.
AliYuQue - Cloud note-taking knowledge management, collaboration platform, Markdown based writing, support embedded flow chart, brain diagram, timing sequence, code rendering, Sketch board creation, personal knowledge sharing, etc. Compared to youdao cloud note and evernote similar products, which include all of its functions, support knowledge sharing and more powerful creation, collaboration and editor, it comes from alibaba ant financial.

Journaling

Day One - Excellent journaling app using text, photos, video, audio, location data, and more.
Journey - Journaling app with many features and with apps for every platform available.

Ebooks

Calibre - Free and open-source e-book computer software application suite which runs on multiple platforms, allows users to manage e-book collections as well as create, edit, and read e-books.
Clearview - Tabbed style e-book reader for PDF, EPUB (DRM free), CHM, and MOBI.
iChm - Ebook reader for CHM (Microsoft Compiled HTML help) files.
Kindle App - Amazon official reading app of kindle.
Klib - New way to manage highlights for Kindle and iBooks.
Scribus - Professional layout and publishing software supporting EPS and SVG import/export, and PDF support.
Sigil - Multi-platform EPUB ebook Editor.

RSS

Leaf - Amazing news reader dedicated to help you enjoy your daily news and easily manage your subscriptions.
NetNewsWire - It’s a free and open source feed reader for macOS.
ReadKit - Mac read-later client supporting all major providers: Instapaper, Pocket and Readability. Even more, ReadKit is a full-featured RSS reader as well.
Reeder 4 - News reader for Feedbin, Feedly, Feed Wrangler and so on.
Vienna - RSS/Atom reader for Mac OS X.
Feedy - An elegant and lightweight RSS client and news reader for your Mac.

Others

bindPDF - Combine multiple PDF files into a single PDF file using a friendly UI.
CHM Reader - Read Compiled HTML (.chm) documents on your Mac.
Chmox - Read CHM documents on your Mac.
PDF Expert - Read, annotate and edit PDFs, change text and images.
PDF Reader Pro - You Can view, create, sign, convert and compress any PDF documents.
Skim - PDF reader and note-taker for OS X.
SkyFonts - The simplest way to try, install, and manage fonts.
Spillo - Powerful, beautiful and amazingly fast Pinboard client for OS X.
Tad - Application for viewing and analyzing tabular data such as CSV files.
texpad - Great LaTeX editor for Mac with auto-update PDF and autocomplete LaTeX commands.

Developer Tools

IDEs

Android Studio - The official IDE for Android, based on Intellij IDEA.
Deco IDE - The best IDE for building React Native apps.
Eclipse - Popular open-source IDE, mainly for Java but with plugin support for a wide array of languages and platforms.
Espresso - The web editor for Mac is back. For people who make delightful, innovative and fast websites.
JetBrains Toolbox App - Manage installed JetBrains tools, download new ones and open recent projects.
AppCode - Smart IDE for iOS/macOS development
CLion - Powerful C and C++ IDE. (Free for Students)
DataGrip - Cross-Plaform IDE for Databases and SQL. FREE for Students, check here for more info.
GoLand - Provides ergonomic environment for Go development.
IntelliJ IDEA - Powerful IDE for JVM languages. (Free for Students)
PyCharm - Powerful Python IDE, which has professional version and community version.
Rider - Cross-Platform C# IDE. It is an alternative to Visual Studio by Microsoft with the additional benefit of getting Resharper features that are not available on Visual Studio for Mac.
WebStorm - The smartest JavaScript IDE by JetBrains. FREE for Students, check here for more info.
Haskell for Mac - A Modern Development Environment for Haskell.
NetBeans IDE - Free and open-source IDE, mainly used for Java development, but supports many other languages and frameworks.
Visual Studio Community for Mac - Fully-featured IDE Free for students, open-source and individual developers.
Visual Studio Code - Microsoft's free & open-source editor, TypeScript friendly,
Xamarin Studio - Free cross platform C# IDE. Xamarin Studio supports iOS, Android and .Net development
Xcode - Essential IDE for iOS/macOS development.
Spyder - Powerful scientific environment written in Python, for Python.

Developer Utilities

BetterRename - The most powerful and complete Mac file renaming application on the market.
Beyond Compare - Compare files and folders using simple, powerful commands that focus on the differences you are interested in and ignore those you are not.
Bidbar - Manage bash commands from the menu bar and run them with keyboard shortcuts.
Cacher - Cloud-based, team-enabled code snippet manager with Gist sync, VSCode/Atom/Sublime packages and Mac/Windows/Linux/Web clients.
canSnippet - Powerful snippet management tool that works across the whole operating system, always accessible via simple keyboard shortcut.
CodeKit - Web development tool which can automatically compile Less, Sass, CoffeeScript, TypeScript, Jade and JavaScript, auto-refresh browsers and much more.
Conduktor - Kafka desktop client.
Dash - Awesome API documentation browser and code snippet manager.
DiffMerge - Application to visually compare and merge files.
EnvPane - OS X preference pane for environment variables.
FinderGo - Open terminal quickly from Finder.
Finicky - Application that allows you to set up rules that decide which browser is opened for every link that would open the default browser.
Gas Mask - Simple hosts file manager for Mac OS X.
Gemini - Intelligent duplicate file finder.
Hex Fiend - Fast and clever open source hex editor.
Hosts.prefpane - System preference pane to manage your hosts file.
iHosts - The only /etc/hosts editor on Mac App Store.
Integrity - Free website link checker for Mac.
Kaleidoscope - Powerful compare tool for text, images and folders. Works perfectly with git, svn or other version control tools.
Koala - GUI application for Less, Sass, Compass and CoffeeScript compilation.
Loca Studio - Analyze, review, and edit app translations. Supports Xcode Localization Catalog (xcloc) and XLIFF 1.2 file formats.
MacSystemColors - Mac app that shows all system colors in light and dark mode for Cocoa developers.
MJML - Framework that utilizes a semantic syntax and a rich standard components library, which allow users to easily create responsive emails.
PaintCode - PaintCode is a unique vector drawing app that generates Objective-C or Swift code in real time, acting as a bridge between developers and graphic designers.
PPRows - Application to calculate how many lines of code you write.
PushMate PushMate is a MacOS app that solves common push notification problems by ensuring your push payloads are correct.
SCM Breeze - Set of shell scripts (for bash and zsh) that enhance your interaction with git.
SecureCRT - Terminal emulation which supports SSH, Telnet or other protocols.
Site Sucker - SiteSucker is a Macintosh application that automatically downloads websites from the Internet.
SnippetsLab - Easy-to-use code snippets manager.
Solarized - Clean and beautiful color theme. Works well with iTerm, JetBrains products, Vim etc.
StarUML - Powerful UML app.
Swiftify - Objective-C to Swift code converter and Xcode & Finder extensions.
SwitchHosts - Free and open-source app for hosts management & switching.
SYM - GUI Application to symbolicate iOS crash log.
TeXstudio - Integrated writing environment for creating LaTeX documents.
Timelane - Visually profile your asynchronous code.
Touch Bar Simulator - Use the Touch Bar on any Mac.
Visual Paradigm - All-in-one UML, SysML, BPMN Modeling Platform for Agile, EA TOGAF ADM Process Management.
Woodpecker - View iOS app's Sandbox files, UserDefaults, Keychain items on a Mac.
WWDC - The Mac OS unofficial WWDC app.
zeplin - Collaboration tool for work between designers and developers.
Nib Unlocker - .nib to .xib converter

Regular Expression Editors

Patterns - Regular expression editor.
Regex - Regular expression testing tool with an emphasis on simplicity.
RegExRX - Development tool for regular expressions.

API Development and Analysis

Cocoa Rest Client - Free, open-source, native Apple OS X app for testing HTTP/REST endpoints.
Insomnia - The most intuitive cross-platform REST API Client.
Paw - Advanced HTTP client.
Postman - Powerful GUI platform to make your API development faster & easier, from building API requests through testing, documentation and sharing.
Katalon Studio - Simplify API, Web, Mobile Automation Tests Free. Robust. Cross-platform. Automation testers from 160 countries with YouTube channels, GitHub repositories.

Network Analysis

Charles - HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet.
James - Open-source proxy tool for checking and mapping requests with http as well as https.
Little Snitch - Network monitor with a world map for visualizing network connections.
mitmproxy - Interactive intercepting HTTP proxy for penetration testers and software developers.
Proxie - HTTP debugging proxy.
Proxyman - Modern and intuitive HTTP debugging proxy for macOS.
Wireshark - The world’s foremost and widely-used network protocol analyzer.

Command Line Tools

ack - A tool like grep, optimized for programmers.
alacritty - A cross-platform, GPU-accelerated terminal emulator.
archey-osx - An archey script for OS X.
asciinema - Easily record terminal sessions and replay them in a terminal as well as in a web browser.
autojump - Replace cd with an intelligent autojump to easily navigate directories from the command line.
bash-it - Shameless ripoff of oh-my-zsh for bash.
bat - A cat(1) clone with syntax highlighting and Git integration.
ccat - The colorizing cat which works similar to cat but displays content with syntax highlighting.
cmus - Small, fast and powerful console music player for Unix-like operating systems.
cool-retro-term - Good looking terminal emulator which mimics the old cathode display.
dark-mode - Control dark mode from the command-line.
eureka - CLI tool to input and store your ideas without leaving the terminal.
Fish Shell - Smart and user-friendly terminal, which is similar with zsh.
fselect - Find files with SQL-like queries.
Github CLI - gh is GitHub on the command line. It brings pull requests, issues, and other GitHub concepts to the terminal next to where you are already working with git and your code.
Glances - Glances is a cross-platform curses-based system monitoring tool.
Go2Shell - Go2Shell opens a terminal window to the current directory in Finder.
htop - htop is an interactive text-mode process viewer for Unix systems. It aims to be a better 'top'.
httpie - Modern command line HTTP client – user-friendly curl alternative with intuitive UI, JSON support, syntax highlighting, wget-like downloads, extensions, etc.
hyper - A terminal built on web technologies.
iTerm2 - iTerm2 is an amazing terminal emulator for OS X.
itunes-remote - Software for controlling iTunes via the terminal.
job - JOB, make your short-term command as a long-term job.
kitty - A cross-platform, fast, feature full, GPU based terminal emulator.
lnav - A log file navigator.
m-cli - Swiss Army Knife for macOS.
Mac-CLI - The ultimate tool to manage your Mac. Automatize the usage of your OS X system.
Magic Wormhole - Get Things From One Computer To Another, Safely.
mas - Simple command line interface for the Mac App Store.
Miller - Like awk, sed, cut, join, and sort for name-indexed data such as CSV, TSV, and tabular JSON.
mycli - CLI for MySQL that can do auto-completion and syntax highlighting.
ndm - Manage npm straight from the couch.
nushell - nushell is a modern, GitHub-era shell written in Rust.
pgcli - Pgcli is a command line interface for Postgres with auto-completion and syntax highlighting.
Rebound - Instantly browse Stack Overflow results in your terminal when you get a compiler error.
Serial - Full-featured serial terminal for the Mac.
shallow-backup - Easily create text documentation of installed applications, dotfiles, and more.
silver searcher (ag) - A code searching tool similar to ack, with a focus on speed.
spaceship - A Zsh prompt for Astronauts.
Taskbook - Tasks, boards & notes for the command-line habitat.
Terminus - Free terminal tool, built with TypeScript, heavily inspired by Hyper.
Termius - Free terminal tool,comparable to xshell on windows platform.
TextQL - Execute SQL against structured text like CSV or TSV.
tmux - "Terminal multiplexer", it enables a number of terminals (or windows) to be accessed and controlled from a single terminal. tmux is intended to be a simple, modern, BSD-licensed alternative to programs such as GNU screen.
tmuxinator - Manage complex tmux sessions easily.
trash - Move files and directories to the trash.
VisiData - Terminal spreadsheet multitool for discovering and arranging data.
xonsh - Python-powered, cross-platform, Unix-gazing shell language and command prompt.
Zsh - Zsh is a shell designed for interactive use, although it is also a powerful scripting language.
xxh - Bring your favorite shell wherever you go through the SSH.

Frameworks For Hybrid Applications

AppJS - Lightweight JavaScript UI library for creating mobile webapps that behave like native apps.
create-dmg - Create a good-looking DMG for your macOS app in seconds.
Electrino - Desktop runtime for apps built on web technologies, using the system's own web browser engine.
Electron - Build cross platform desktop application with JavaScript, HTML and CSS.
ionic - Build amazing native and progressive web apps with Angular and open web technologies. One app running on everything.
MacGap - Provides a lightweight JavaScript API for OS X integration, such as displaying native notifications or writing data to a file.
nw.js - Build desktop application with HTML and JavaScript. It lets you call all Node.js modules directly from DOM and enables a new way of writing applications with all Web technologies.
Qt - Cross-platform application framework.
React Native for Ubuntu - Build Ubuntu desktop apps using React Native.
React Native macOS - Build OS X desktop apps using React Native and Cocoa.
react-desktop - React UI Components for macOS Sierra.
ReactXP - Microsoft official production, support platform Web, iOS, Android and Windows UWP is still an ongoing work.

Version Control

Cornerstone - Powerful version control with a gorgeous interface.
Fork - Fast and friendly Git client for Mac.
Git Cola - Powerful, Fast, Lightweight and Friendly Git GUI. For those caffeine adicting users.
Gitbar - Open-source，display Github contribution statistics on your menu bar.
GitFinder - Fast and lightweight Git client for Mac with Finder integration.
Gitfox - Commit faster, improve your code quality with superior diffs - and look good doing it.
GitHub Desktop - The official GitHub GUI.
GitKraken - The most popular Git GUI for Windows, Mac and Linux.
GitX-dev - Fork of Pieter's nice git GUI for OS X. Includes branch/tag sidebar and various fixes.
Hub - Command-line wrapper for Git that makes you better at GitHub.
OhMyStar Beautiful and efficient way to manage, explore and share your Github Stars.
SmartGit - Git client with support.
SourceTree - Free Git & Mercurial client for Windows or Mac.
Sublime Merge - Git client, from the makers of Sublime Text.
Tower2 - The most powerful Git client for Mac and Windows.
GitUp - A simple & powerful Git client。

Virtualization

Docker - Powerful, performs operating-system-level virtualization.
Parallels - Powerful, easy-to-use VM. No free upgrade for each new Mac OS.
Vagrant - Tool for building and distributing development environments.
Veertu - The lightest VM on Mac. Responsive, sandboxed & native way to run VM on your Mac.
Virtual Box - Powerful x86 and AMD64/Intel64 virtualization product.
VMware Fusion - Powerful, commercial VM developed by VMware.

Databases

Apache Directory Studio - LDAP browser and Active Directory client.
Azure Data Studio - Cross-platform database tool for using on Microsoft family on-premises and cloud data platforms such as MSSQL Server
Another Redis Desktop Manager - A faster, better and more stable redis desktop manager.
Base 2 - Application for creating, designing, editing and browsing SQLite 3 database files.
Beekeeper Studio - Smooth SQL editor and database manager
Bdash - Modern SQL client application, supports MySQL, PostgreSQL (Redshift) and BigQuery.
Chrome MySQL Admin - Powerful Chrome app to manage your MySQL.
Core Data Editor - Core Data Editor lets you easily view, edit and analyze applications‘ data.
DB Browser for SQLite - Official home of the DB Browser for SQLite.
DBeaver - Universal SQL Client.
ElectroCRUD - Modern MySQL CRUD application.
FastoNoSQL - Cross-platform GUI client for Redis, Memcached, SSDB, LevelDB, RocksDB, UnQLite, LMDB, ForestDB, Pika and Dynomite key-value databases.
FastoRedis - Cross-platform professional GUI management tool for Redis.
JackDB - Secure, collaborative environment for your queries and data-driven insights.
Keylord - Desktop GUI client for Redis, Bolt, LevelDB and Memcached key-value databases.
MDB Explorer - MDB tool to open, read, export your MDB files to other formats and databases.
Medis - GUI Manager for Redis.
Mingo - Easy to use MongoDB GUI with mind-blowing features.
Mongo Management Studio - Simple MongoDB GUI.
mongoDB.app - The easiest way to get started with mongoDB on the Mac.
MongoDB - MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need.
MySQL Workbench - The official MySQL GUI.
Navicat Data Modeler - Powerful and cost-effective database design tool which helps you build high-quality conceptual, logical and physical data models.
neo4j - The leading graph database!
pgModeler - is an open source data modeling tool designed for PostgreSQL.
Postgres.app - The easiest way to get started with PostgreSQL on the Mac.
Postico - Modern PostgreSQL client for Mac.
PSequel - PostgreSQL GUI tool for Mac OS X.
RedisClient - Redis client application on mac, windows and linux.
RedisDesktopManager - Cross-platform GUI management tool for Redis.
Sequel Pro - MySQL database management for Mac OS X.
SQLight - SQLite database manager tool.
SQLPro Studio - Simple, powerful database manager for macOS.
Tableau Public - Free data-visualization software.
TablePlus - Supports: PostgreSQL, MySQL, RedShift, MariaDB... High-end security ensured.

Design and Product

Design Tools

Acorn - Great Mac OS X picture and photo editor, built for humans.
Affinity Designer - Professional graphic design software for Mac.
Affinity Photo - Professional image editing software for Mac.
Alchemy - Experimental, open-source drawing application with an emphasis on creating conceptual art.
Amadine - A vector drawing app that has everything a graphic designer needs wrapped in an uncluttered and intuitive interface.
Art Text 3 - This is graphic design software specifically tuned for lettering, typography, text mockups and various artistic text effects.
Blender - Free and open 3D creation software.
Colorpicker - Colorpicker is a complete open-source colors manipulation tool with picking!
Figma - The collaborative interface design tool, for vector graphics and UI prototyping.
FontForge - Free, open-source font editor.
GIMP - The GNU Image Manipulation Program.
Gravit Designer - Full featured free vector design app right at your fingertips.
inklet - Turn your Mac trackpad into drawing board.
Inkscape - Professional vector graphics editor.
Krita - Open-source digital painting software for concept artists, digital painters, and illustrators.
macSVG - Designing HTML5 SVG art and animation.
MagicaVoxel - Free, lightweight 8-bit voxel editor and interactive path tracing renderer.
MakeHuman - Powerful and free 3D human modeler.
Monodraw - Powerful ASCII art editor designed for the Mac.
Nik Collection - Nik Collection by DxO.
Paintbrush - Bitmap image editor.
Pencil2D - A easy, intuitive tool to make 2D hand-drawn animations.
Pixel Perfect - Tool to overlay design images over implementation and make it pixel perfect.
Pixelmator - Full-featured image editor for Mac.
Principle - Application for designing animated and interactive user interfaces.
ScreenToLayers- Easily export your screen into a layered PSD file.
Sculptris - 3D sculpting software.
Sketch - Professional digital design for mac.
- Sketch Cache Cleaner - Deletes hidden Sketch history files that can take a lot of space on your hard drive and that you would probably never use.
- Measure Plugin - Make it a fun to create spec for developers and teammates.
- Sketch Toolbox Plugin Manager - Simple plugin manager for Sketch.
- User Flows Plugin - Generating flow diagrams from Artboards.
SketchBook - Drawing software for concept design, comic art, and digital sketching.
Sparkle - Pro visual web design.
Tayasui Sketches - Professional drawing software.
Vectr - Free graphics editor used to create vector graphics easily and intuitively.

Prototyping and Mind-Mapping Tools

Adobe XD (Experience Design) - First all-in-one cross-platform tool for designing and prototyping websites and mobile apps.
Axure RP 8 - Prototypes, specifications and diagrams in one tool.
Balsamiq Mockups - Wire-framing tool that helps you work faster and smarter.
Flinto - Quickly create interactive prototypes of mobile, desktop, or web apps.
Framer - Tool for interactive prototyping.
Justinmind - Prototyping platform for web and mobile apps.
Kite - Powerful animation and prototyping application for Mac & iOS.
Lighten - The best way to clarify thinking, boost productivity, brainstorm, and visualize concepts.
Loremify - Great Lorem ipsum generator.
Marvel - Simple design, prototyping and collaboration.
MindNode - Mind-mapping software with an emphasis on simplicity and ease-of-use.
MockFlow - Online prototyping suite for web-design and usability testing.
Mockplus - Prototype faster, smarter and easier.
OmniGraffle - Diagramming and graphic design for Mac, iPhone, and iPad.
Origami Studio - Tool for designing modern interfaces, built and used by designers at Facebook.
pencil - Free, open-source tool for making diagrams and GUI prototyping.
ProtoPie - Create the most advanced prototypes as easy as Pie.
Scapple - Practical mind-mapping software with free whiteboard-like layout.
SimpleMind - The world leader in cross platform Mind Mapping tools.
WriteMapper - Get from idea to final draft in no time.
XMind - The most popular mind-mapping tool on the planet.
Simple Diagrams - A desktop app for creating hand-drawn-like, fast, clear sketches of problems, processes, workflows, ideas and more!
yGraph Editor - High quality diagrams made easy.

Screencapturing Software

CleanShot - Discover a superior way to capture your Mac's screen.
CloudApp - Work at the speed of sight.
Gifox - Gif Recording and Sharing.
Kap - Open-source screen-recorder built with web technology.
KeyCastr - KeyCastr, an open-source keystroke visualizer.
Kyapchar - Simple screen and microphone audio recorder for Mac.
Licecap - Record your screen and export to GIF. You can change the recording area anytime during recording.
Lightshot - The fastest way to take a customizable screenshot.
Monosnap - Make screenshots. Draw on it. Shoot video and share your files. It's fast, easy and free.
ScreenShot PSD - Capture the screen as a layered PSD for easy editing.
Skitch - Screen capture application with a powerful annotation capabilities.
Snip - Application for sharing captured images on QQ Mail.
Snipaste - Simple but powerful snipping tool.
Teampaper Snap - Let your screenshots speak up.
Xnip - Handy Screenshot App.
Dropbox - Dropbox app offers easy screenshot capturing and sharing

Other Tools

APNGb - PNG image assembler/disassembler app.
Assetizr - Resizing images and optimising them for web and mobile applications.
Couleurs - Simple app for grabbing and tweaking the colors you see on your screen.
ExifCleaner - Remove exif metadata from images and videos with drag and drop.
Frank DeLoupe - Color-picking tool, supports Retina.
HEIC Converter - Convert HEIC images to JPEG or PNG.
Iconset - Free, cross-platform and fast SVG icon organizer and manager for Mac and Windows.
Iconjar - Icon management tool to organize or search your icons.
IconKit - App icon generator.
Image2icon - Create and personalize icons from your pictures.
ImageAlpha - Compress images with PNG format and remove transparency.
ImageOptim - Compress images and remove EXIF information.
iPic - Easily upload images with Markdown supported.
JPEGmini - Reduce image size by up to 80%, without compromising quality.
Mark Man - Measure & Spec Fast.
Nucleo - Icon manager. Import, export, customize and convert icon libraries.
Preset Brewery - Tool to convert Lightroom presets to Adobe Camera Raw.
Resize Master - Batch resize and watermark your images fast and easy.
RightFont - Preview, sync, install and manage fonts on Mac, Dropbox or Google Drive.
Sip - The best way to collect, organize & share your colors.
Snagit - Simple, Powerful Screen Capture Software and Screen Recorder.
Spectrum - Easily and intuitively creating beautiful color schemes.
svgus - Organize, clean and transform your SVGs.
TinyPNG4Mac - Open-source tool to compress images.
Tropy - Research Photo Management.
PicGo - Support for common cdn image hosting tool.
Preset Brewery - Tool to convert Lightroom presets to Adobe Camera Raw.
Assetizr - Resizing images and optimising them for web and mobile applications.
AppIconBuilder - Export icons for multi-platform
uPic - macOS native app, powerful terse image hosting client.

Communication

Collaboration and Team Tools

Adium - Free instant messaging application for Mac OS X. Connect to AIM, MSN, SMPP, Yahoo and more.
Caprine - Third-party privacy-focused Facebook Messenger app.
DingTalk - Free, powerful and professional office tool used by over 5 million enterprises and organizations globally.
Discord - All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone.
Franz - Electron based, multi-protocol wrapper for web-based chat. One application, 23 messenger services.
Gitter - Instant messaging and chat room system for developers as well as GitHub users. Developer friendly with Markdown syntax support.
Keybase - Secure groups, files, and chat for everyone!
Krisp - An AI-powered noise cancelling app that mutes background noise during calls.
LimeChat - Open-source IRC client for Mac OS X.
Messenger For Mac - Third-party Facebook messenger for Mac.
Muzzle - A simple mac app to silence embarrassing notifications while screensharing.
Rambox - Messaging and emailing app that combines common web applications into one.
Element - Create, share communicate. Chat and call securely.
Signal Desktop - Fast, simple, secure. Privacy that fits in your pocket.
Skype - Cross-platform application that provides video chat and voice call services. Users can exchange images, text, video and any other digital documents.
Shift - De-clutter your desktop workspace and streamline your accounts, apps, and workflows.
Slack - Awesome tool for team collaboration and communication.
Stack - Open, organize and use multiple web apps on a single screen. Stack your apps by categories or projects.
Teambition - Team collaboration tool, including many features like task plan, schedule, file sharing, instant discussion and everything you need when collaborating with other team members.
Telegram - Messaging app with a focus on speed and security.
Textual - Internet Relay Chat (IRC) client.
WeChat - Official WeChat app for Mac.
WeeChat - The extensible command-line chat client.
WhatsApp Desktop - Available in the Mac App Store, Whatsapp for Desktop.

Email Clients

Airmail - Fast email client. For both Mac OS and iOS.
Foxmail - Fast email client.
MailTags - Use tags to organize email and schedule.
N1 - Extensible, open-source mail app, free for developers and $7/month for Pro.
Nylas Mail - Extensible desktop mail app built on the modern web.
Polymail - Simple, beautiful and powerful email client.
Postbox - Powerful, simple and beautiful email client, need to pay for a license.
Spark - Fast email client. For both Mac OS and iOS.
ThunderBird - Software that makes email easier.
Edison Mail - A customisable, simple, and beautiful email client.

Cyberduck - Free FTP, SFTP, WebDAV, S3, Backblaze B2, Azure and OpenStack Swift browser.
Flow - Award-winning, beautiful, fast, and reliable FTP + SFTP client.
Transmit - Highly flexible and intuitive FTP client, supports SFTP, S3 and iDisk/WebDAV.

Data Recovery Tools

Data Rescue - Comprehensive and professional data recovery tool for most cases.
DiskWarrior - The world’s most advanced repair and recovery tool for Mac.
R-Studio for Mac - Powerful tool for recovering data on disks, even if their partitions are formatted, damaged or deleted.
SuperDuper! - Painless fully bootable disk backups.

Audio and Video Tools

Adapter - Free audio, video and image conversion software.
Aegisub - Free, cross-platform open source tool for creating and modifying subtitles. Aegisub makes it quick and easy to time subtitles to audio, and features many powerful tools for styling them, including a built-in real-time video preview.
Audio Profile Manager - Allows you to pin input/output devices for each particular combination of connected devices. May suppress HDMI displays from being chosen.
Ardour - Cross-platform audio software for multi-track recording and editing.
Audacity - Free, open-source, cross-platform audio software for multi-track recording and editing.
Audio Hijack - Record any application's audio, including VoIP calls from Skype, web streams from Safari, and much more.
Carol - A minimal and beautiful lyrics app for macOS.
Cog - Free, open-source audio player.
DaVinci Resolve - Free, cross-platform video editing, color grading, video effects and audio editing software.
Elmedia Player - This media player is a super versatile app for any file format you probably may think of: FLV, MP4, AVI, MOV, DAT, MKV, MP3, FLAC, M4V are all supported as well as many others.
Gifski - Convert videos to high-quality GIFs.
HandBrake - Tool for converting video from nearly any format to a selection of modern, widely supported codecs.
Hydrogen - Professional yet simple and intuitive pattern-based drum programming for GNU/Linux.
iFFmpeg - Comprehensive Media Tool for macOS. Making High Quality Video Encoding Accessible for Everyone.
IINA - The modern video player for macOS. Based on mpv, the powerful media player project.
Kodi - Award-winning free and open-source (GPL) software media center for playing videos, music, pictures, games, and more.
LMMS Formerly "Linux MultiMedia Studio", LMMS is a powerful Digital Audio Workstation designed like FL Studio (formerly Fruity Loops).
LosslessCut - Cross platform tool for quick and lossless video and audio trimming using ffmpeg.
LyricsX - Lyrics for iTunes, Spotify and Vox.
Metadatics - Advanced Audio Metadata Editor.
Mixxx - The most advanced free DJ software.
Movie Catcher - Movie movie and online viewing offline download software, with Baidu cloud to make offline download and online playback.
mpv - Free, open-source, and cross-platform media player.
MuseScore - Free, open-source music notation software.
Natron - Open-source compositing software. Node-graph based. Similar in functionality to Adobe After Effects and Nuke by The Foundry.
Perian - (No longer under active development) ~~Let QuickTime play all the common formats of free plug-ins~~.
Playback - Experimental video player.
Popcorn Time - Watch torrent movies instantly, This Popcorn Time service will never be taken down. Download and enjoy.
ScreenFlow - Screencasting and video editing software.
Shotcut - Free open-source video editor.
Soda Player - Player that can play seed, magnetic links, online video, automatic captions, links and local video files.
Sonora - Minimal, beautifully designed music player.
SpotMenu - Spotify and iTunes in your menu bar.
Stremio - Movies, TV shows, series, live television or web channels like YouTube and Twitch.tv - you can find all this on Stremio.
Stringed 2 - Music practice software designed to help users learn how to play their favorite songs.
Synfig Studio - Synfig Studio is free, open-source 2D animation software.
VLC - Free, open-source, cross-platform multimedia player as well as framework that plays most multimedia files, DVDs, Audio CDs, VCDs and various streaming protocols.
VOX Player - High-definition audio player for Mac and iPhone. Music just sounds better!
XLD - Tool to decode, convert and play various 'lossless' audio files.
MusicPlus - Search, play & download music for free.
Recordia - Record audio directly from the menu bar or with a global keyboard shortcut.

Download Management Tools

aria2 - Lightweight multi-protocol & multi-source command-line download utility.
Downie - Video downloader for macOS with support for YouTube and other 1200 sites.
Deluge - Deluge is a lightweight, Free Software, cross-platform BitTorrent client.
FOLX - Free download manager for Mac OS X with a true Mac-style interface.
Free Download Manager - Powerful, modern download accelerator and organizer for Windows and Mac. (FREE)
JDownloader - Free, open-source download management tool with a huge community of developers that makes downloading as easy and fast as it should be.
Motrix - Motrix is a full-featured download manager that supports downloading HTTP, FTP, BitTorrent, Magnet, Baidu Net Disk, etc.
qBittorrent - A project aims to provide an open-source software alternative to µTorrent.
Shuttle - Easy Download Manager for any links.
Transmission - Fast, easy, free BitTorrent Client.
You-Get - Tiny command-line utility to download media contents (videos, audios, images) from the web.
youtube-dl - Command-line program to download videos from YouTube.com and other video sites

Cloud Storage

I recommend using online storage with Mac clients

Arq - Cloud storage backup client that supports AWS, GCP, DropBox, and more.
Carbonite - Carbonite can protect your Mac from all of the most common forms of data loss.
Dropbox - File hosting service that offers cloud storage and file synchronization with collaborative edit features.
Mega - Free cloud service, offers 50GB free storage.
NextCloud - Actively maintained fork of ownCloud, faster and completely open-source
ownCloud - Cloud storage.
Seafile - Reliable and High Speed File Sync and Share.

Input Methods

Kawa - Better input source switcher for OS X.
Rocket - Makes typing emoji faster and easier using Slack-style shortcuts.
Touch Emoji - emoji picker for MacBook Pro Touch Bar.
Type2Phone - Use Your Mac as Keyboard for iPhone, iPad & Apple TV.

Browsers

Brave - Web browser with an emphasis on privacy and speed.
Chrome - Chrome, developed by Google
Chromium - Open-source, free web browser project by Google, to provide the source code for Google Chrome.
Microsoft Edge — Microsoft Edge, based on Chromium, but built by MS
Firefox - Meet Firefox Quantum. Fast, free, open-source web browser developed by the Mozilla Foundation.
Safari - Native browser for Macs.
TorBrowser - Anonymity Online. Protect your privacy. Defend against network surveillance and traffic analysis.
Vivaldi - The browser that puts you in control.

Translation Tools

(Or you could just use the Mac OS built-in dictionary)

Grammarly - Refine your english
iTranslate - Translate entire website instantly with its built-in browser or with iTranslate Safari extension into over 40 languages.
Ludwig - Linguistic search engine that helps you to write better in English.
Mate Translate - Translate in Safari and any app on macOS between 103 languages.

Encryption

Deadbolt - The easiest file encryption tool you'll ever use. macOS-compatible, and open-source so you can trust it.

Security Tools

BlockBlock - Me: "Please alert me whenever anything is persistently installed." BlockBlock: "You got it"
Dylib Hijack Scanner - Simple utility that will scan your computer for applications that are either susceptible to dylib hijacking or have been hijacked.
KextViewer - View all modules on that are loaded in the OS kernel.
KnockKnock - See what's persistently installed on your Mac.
LinkLiar - Link-Layer MAC spoofing GUI for macOS.
LockDown - Open-source tool for El Capitan that audits and remediates security configuration settings.
LuLu - is the free macOS firewall that aims to block unauthorized (outgoing) network traffic.
MalwareBytes - Malwarebytes crushes the growing threat of Mac malware, so you are protected and your machine keeps running silky smooth. Cybersecurity smart enough for the Mac.
OverSight - Monitor mic and webcam, alerting you when the internal mic is activated, or whenever a process accesses the webcam.
RansomWhere? - Generic Ransomware Detection.
stronghold - Easily configure MacOS security settings from the terminal.
TaskExplorer - Explore all processes running on your Mac with TaskExplorer.
What's Your Sign? - Adds menu item to Finder.app to display the cryptographic signing information for any file.

Proxy and VPN Tools

Algo - Personal IPSEC VPN in the cloud.
tigerVPN - VPN Client for Mac.
Lantern - Free application that delivers fast, reliable and secure access to the open internet.
ShadowsocksX-NG - Next generation of ShadowsocksX.
ShadowsocksX - Secure socks5 proxy, designed to protect your internet traffic.
Shimo - VPN Client for Mac.
SpechtLite - Rule-based proxy app for macOS.
Surge - Web developer tool and proxy utility for iOS 9.
tinc - Secure mesh VPN software.
Tunnelbear - Really simple VPN to browse the web privately & securely. Unblock websites around the world with applications for Mac, PC, iOS, Android & Chrome.
Tunnelblick - Free, open-source graphic user interface for OpenVPN on OS X.
V2rayU - Macos client based on v2ray.
Windscribe - Gives 10gb per month free on the spot and gives limited(on free) location control. Connection also takes very less time.
ClashX - A rule based proxy For Mac base on Clash.

Utilities

Clipboard Tools

ClipMenu - Clipboard manager for Mac OS X.
Clipy - Clipy is a Clipboard extension app for macOS. Based on ClipMenu.
CopyQ - Clipboard Manager with Advanced Features.
iPaste - Lightweight and efficient clipboard tool.
Paste - Smart clipboard history & snippets manager.
PasteBot - Powerful clipboard manager.
Flycut - Clean and simple clipboard manager for developers.
Maccy - Lightweight clipboard manager for macOS.

Anvil - Anvil is a beautiful menubar app for managing local websites. Serve up static sites and Rack apps with simple URLs and zero configuration.
Bartender - Organize or hide menu bar icons on your Mac.
BeardedSpice - Allows you to control web based media players (SoundCloud, YouTube, etc) and some native apps with the media keys on Mac keyboards.
BitBar - Place the output from any script or program right in your Mac OS X menu bar.
Dato - A better menu bar clock with calendar, events, and time zones.
Dozer - Hide MacOS menubar items.
Eye Timer - Take Breaks to prevent Eye Strain timer for Mac.
Hidden - A ultra-light MacOS utility that helps hide menu bar icons.
Hue in the Menu - Philips Hue light management in the menu bar with multi-room support.
iGlance - macOS System Monitor for the Status Bar.
Itsycal - Tiny calendar for your Mac's menu bar.
MeetingBar - Menu bar app for your calendar meetings
Streaker - GitHub contribution streak tracking menubar app.
Vanilla - Hide menu bar icons on your Mac.
Jiffy - Discover and share the best GIFs on GIPHY.

File Organization Tools

BetterZip 3 - Archive tool supports ZIP, TAR, TGZ, TBZ, TXZ (new), 7-ZIP, RAR.
eZip - An easy to use, feature-rich archiver for macOS. Supports popular formats such as RAR, ZIP, 7Z, BZ2, GZ etc. Works great with Mojave dark-mode and QuickLook.
Fileside - A modern, tiling file manager with unlimited panes.
Hazel - Automated file organization for your Mac. Responsibly and beautifully designed.
Keka - file archiver for macOS. Compression: 7Z, ZIP, TAR, GZIP, BZIP2, XZ LZIP, DMG, ISO. Extraction: 7Z, ZIP, RAR, TAR, GZIP, BZIP2, XZ, LZIP, DMG, ISO, LZMA, EXE, CAB, WIM, PAX, JAR, APK, APPX, CPGZ, CPIO.
muCommander - Lightweight file manager with a dual-pane interface.
PDF Archiver - Nice tool for tagging and archiving tasks.
The Unarchiver - Unarchive many different kinds of archive files.

General Tools

AirServer - Most advanced screen mirroring software receiver for Mac, PC and Xbox One.
ControlPlane - Manages configuration profiles for your Mac. Determines where you are or what you are doing based on a number of available evidence sources and then automatically reconfigures your Mac based on your preferences.
DNS Heaven - Unifies macOS DNS so applications using glibc can resolve DNS with the native stack. Mainly for use with VPNs.
HTTrack - Useful tool for downloading a whole website and offline browsing.
Lungo - Prevent your Mac from going to sleep.
Mac Cache Cleaner - Cache cleaner for Mac
MacAssistant - Google Assistant for macOS
Manta - Flexible invoicing desktop app with beautiful & customizable templates.
Memo - Simple and elegant app. Unlock memos even more quickly using Touch ID.
Numi - Beautiful calculator app for Mac.
Plash - Make any website your desktop wallpaper.
SlowQuitApps - An OS X app that adds a global delay of 1 second to the Cmd-Q shortcut.
Torimori Sweeper - MacOS app that lets you declutter your Downloads, one file at a time.
Ultra TabSaver - The Open Source Tab Manager for Safari

To-Do Lists

2Do - Nice todo app.
Day-O 2 - Menu bar clock replacement with built-in calendar.
Fantastical - The calendar app you won't be able to live without.
Focus - Beautiful pomodoro-based time manager.
Microsoft To-Do - Microsoft's successor to Wunderlist.
Nozbe - Powerful GTD app for individuals and teams, with support for every Apple device (Mac, iPhone, iPad, Watch).
OmniFocus - Nice GTD app, made by OmniGroups.
Taskade - Real-time collaborative editor for teams.
TaskPaper - Plain text to-do lists.
Things - Delightful and easy to use task manager. (Award-winning App)
Todoist - Cross-platform todo list app.
Tomato 2 - Beautiful and simple Pomodoro timer.
TickTick - Simple and effective to-do list and task manager that helps you organize all aspects of life.

Productivity

1440 Minutes Left Today - Keep a track of how many minutes you have left until the day is over, right in your menu bar.
Alfred - Award-winning app which boosts efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
BetterTouchTool - Great, feature-packed app that allows you to configure many gestures for your Magic Mouse, Macbook Trackpad, Magic Trackpad and also Mouse Gestures for normal mice.
Choosy - UI, URL API and a browser extension set for managing rules where and how to open links.
Hammerspoon - Tool for powerful OSX automation with the Lua scripting engine.
HapticKey - A simple utility application for MacBook with Touch Bar that triggers a haptic feedback when tapping Touch Bar.
HazeOver App that dims your background app windows so you can focus more on your main task!
Hungrymark - Useful app to bookmark your files, folders, and webs, quick access your bookmarks through menu bar
iCMD - Fuzzy menubar search and vim/easymotion emulation which works globally for every native MacOS app.
Karabiner - Powerful and stable keyboard customizer for OS X.
Keyboard Maestro - Automate routine actions based on triggers from keyboard, menu, location, added devices, and more.
Keytty - App to keep your hands on the keyboard. Move, click, scroll, drag and more with a few strokes.
Lazy - Keyboard-driven commands to manage your surroundings directly from your mac.
Mos - Simple tool can offer the smooth scrolling and reverse the mouse scrolling direction on your Mac.
Mouseless - Master all of the magic keystrokes for your favorite apps & tools.
OmniPlan - The best way to visualize, maintain, and simplify your projects. Project Management made easy.
Qbserve - Time tracking automation: freelance project tracking, timesheets, invoicing & real-time productivity feedback.
RescueTime - Personal analytics service that shows you how you spend your time and provides tools to help you be more productive.
SensibleSideButtons – Use the side buttons on your mouse to move forward and backward in many apps, like in Windows.
nnScreenshots - a super easy way to keep a visual record of your productivity to make it easier to fill out timesheets or just to help you review the day. Built in timesheet editor.
skhd - Simple hotkey daemon for macOS.
Strategr – No-fuss time management app. Stategr helps you maximize your productivity, giving you the quickest and most effective way to time-box your day.
Time Out - Easy break reminders, with micro-break and flexible customization if you want it.
Timing - Automatic time and productivity tracking for Mac. Helps you stay on track with your work and ensures no billable hours get lost if you are billing hourly.
Trello - A collaboration tool that organizes your projects into Kanban boards.
Ukelele - Unicode Keyboard Layout Editor.
xScope - Powerful set of tools that are ideal for measuring, inspecting & testing on-screen graphics and layouts.
Z - Powerful way to navigate easily by typing only a string of directory name in terminal instead of typing exact location of director.
Pomodoro Cycle - Pomodoro tracker

Window Management

AltTab - Open source window switcher with window previews.
Amethyst - Tiling window manager.
contexts - Provides more power than the native Mac Dock. Especially when you have multiple screens, it can help you switch more quickly.
Divvy - Window management at its finest with its amazing Divvy Grid system.
Hummingbird - Easily move and resize windows without mouse clicks, from anywhere within a window.
IntelliDock - Hides the Dock, Automatically.
Magnet - Window manager that keeps your workspace organized.
Moom - Allows you to easily move and zoom windows, or to another display—using either the mouse or the keyboard.
Rectangle - Window management app based on Spectacle, written in Swift.
ShiftIt - Managing window size and position in OSX.
SizeUp - Powerful, keyboard-centric window management.
Slate - Window management application similar to Divvy and SizeUp (except better and free!). (Needs config file)
Total Spaces - Provides window management much like ubuntu. Creates hotkeys for workspaces which allows you to easily move around.
yabai - Tiling window manager for macOS. A rewrite of chunkwm, it provides a more seamless integration with the operating system.

Password Management

1Password - Cross-platform password management tool.
Authy - Two-factor authentication token manager that backs up and syncs across your devices.
Bitwarden - Open source password management tool for Mac OS, iOS and browsers.
Buttercup - The Password Manager You Deserve
Dashlane - Cloud-based password manager with award-winning design.
Enpass - Cross-platform password management tool with cloud integration.
Keeweb - Free, cross-platform password manager compatible with KeePass.
LastPass - Password management tool for Mac OS and browser.
MacPass - Open-source KeePass Mac OS client.
SafeInCloud - Cross Platform password management, low cost app!

Finder Tools

fman - The first dual-pane file manager to integrate features from Sublime Text.
ForkLift - The most advanced dual pane file manager and file transfer client for macOS.
Path Finder - File management app.
QSpace - A clean and efficient Multi-view File Manager.
TotalFinder - Chrome-styled Finder substitute.
XtraFinder - Adds tabs and cut to Mac Finder.

Quality of Life Improvements

CheatSheet - Hold the ⌘-Key to get a list of all active shortcuts of the current application. It's as simple as that.
f.lux - Makes the color of your computer's display adapt to the time of day.
Grayscale Mode - An open source macOS app that lets you quickly toggle grayscale filter right from your menu bar or using a keyboard shortcut (⌥⌘G).
KeyCastr - Open-source keystroke visualizer.
NightOwl - Automatically switch between macOS Mojave's light and dark themes by time of day or with a menu bar or keyboard shortcut.
One Switch - Mac menu bar app that adds various switches to the Mac's menu bar.
Shifty - A macOS menu bar app that gives you more control over Night Shift.
Snap - Launch an app in a snap. Ridiculously easy shortcut management.
Shareful - Supercharge the system share menu with copy, save, and open actions.

Amphetamine - Override your energy saver settings and keep your Mac awake.
AppCleaner - Small application which allows you to thoroughly uninstall unwanted apps.
Background Music - Automatically pause your music, set individual apps' volumes and record system audio.
Cleaner for Xcode - Helps make your Xcode faster by removing unwanted and deprecated files.
coconutBattery - Shows live information about the battery in your Mac. Includes: manufacture date, capacity, cycle count, battery status, temperature, discharging power.
Coolant - Menubar app that lets you know when an app is consuming 100% CPU or more than a gigabyte of memory (or any arbitrary limits you choose).
DaisyDisk - Gives a great overview of disk usage. Can also make more disk-space available by cleaning up your disk.
FruitJuice - Will let you know how long to stay unplugged each day to keep your battery healthy.
gfxCardStatus - Unobtrusive menu bar app for OS X that allows MacBook Pro users to see which apps are affecting their battery life by using the more power-hungry graphics.
Gray - Pick between the light appearance and the dark appearance on a per-app basis with the click of a button.
HandShaker - Mac on the management of Android mobile phone content.
HTML5 Player - HTML 5 video player. Keep your Mac from "burning".
iStat Menus - Advanced Mac system monitor on the menubar.
iStats - Command-line tool that allows you to easily grab the CPU temperature, fan speeds and battery information on OSX.
Juice - Make your battery information a bit more interesting.
KeepingYouAwake - Alternative to Caffeine with better support for dark mode in Mac.
Monity - System monitoring widget for OS X.
Mounty - Tiny tool to re-mount write-protected NTFS volumes under Mac OS X 10.9+ in read-write mode.
NitroShare - Cross-platform network file transfer utility.
Noti - Receive Android notifications on your Mac (with Pushbullet).
OmniDiskSweeper - Shows you the files on your drive, ordered by size. It can be used to find and remove unused files.
OnyX - Multifunction utility to verify disks and files, run cleaning and system maintenance tasks, configure hidden options and more.
Paragon NTFS - Read/write access to NTFS in macOS Sierra.
Porting Kit - Install Windows® Games inside your Mac.
Sensei - Sensei is a multi-tool for Mac performance, with features spanning across both hardware and software.
SSH Tunnel - Application for managing SSH connections.
TG Pro - Temperature monitoring, fan control & hardware diagnostics to help keep your Mac cool and healthy.
Tuxera NTFS - Full read-write compatibility with NTFS-formatted drives on a Mac.
Overkill - Stop iTunes from opening when you connect your iPhone.

Gaming Software

OpenEmu - A great video game console emulator, supports many different emulators in a single application. (e.g. Sony PSP, GameBoy, NDS and so on)
PPSSPP - A awesome PSP emulator for any OS you can dream of!

AnyDesk - Provides Remote access across multiple machines.
RealVNC - The original and best software for remote access across desktop and mobile.
TeamViewer - Proprietary computer software package for remote control, desktop sharing, online meetings, web conferencing and file transfer between computers.

Chirper - A simple and tiny menu bar app for Buffer/Twitter that helps you tweet your thoughts without opening anything.
Flume - A beautiful Instagram experience for your Mac. The free version is good enough if you only want to do the browsing instead of posting.

QuickLook Plugins

quick-look-plugins - List of useful Quick Look plugins for developers

Third Party App Markets

If you come across websites offering pirated software or cracks, please post HERE. We love apps, but only authentic ones. :)

Setapp - The best apps for Mac in one suite.

Package Managers

Here are some of the major software download sites, there are a number of OSX Mac software sites

Cakebrew - GUI client for Homebrew. Install, check or remove apps, no command-line needed.
Homebrew Cask - Command line installation manager which extends Homebrew and brings its elegance, simplicity, and speed to Mac OS applications and large binaries alike.
Homebrew - The missing package manager for macOS.
MacPorts - Open-source community initiative to design an easy-to-use system for compiling, installing, and upgrading either command-line, X11 or Aqua based open-source software on the Mac OS X operating system.
MacUpdate Desktop - Simplifies finding, buying and installing apps for your Mac.

Mac App Download Sites