List of awesome open source applications for macOS. This list contains a lot of native, and cross-platform apps. The main goal of this repository is to find free open source apps and start contributing. Feel free to contribute to the list, any suggestions are welcome!
You can see in which language an app is written. Currently there are following languages:
[Un]MuteMic - macOS app to mute & unmute the input volume of your microphone. Perfect for podcasters.
Languages: 
Objective-C 
C
Screenshots
Audacity - Free, open source, cross-platform audio software
Languages: C
Website: https://www.audacityteam.org/
Screenshots
AUHost - Application which hosts AudioUnits v3 using AVFoundation API.
Languages: 
Swift
Screenshots
Aural Player - Aural Player is a audio player application for the macOS platform. Inspired by the classic Winamp player for Windows, it is designed to be to-the-point and easy to use.
Languages: Swift
Screenshots
(5 more screenshots available in the repository)
AutoMute - Automatically mute the sound when headphones disconnect / Mac awake from sleep.
Languages: Objective-C
Website: https://yoni.ninja/automute/
Screenshots
Background Music - Background Music, a macOS audio utility: automatically pause your music, set individual apps' volumes and record system audio.
Languages: 
C++
Screenshots
BlackHole - BlackHole is a modern macOS virtual audio driver that allows applications to pass audio to other applications with zero additional latency.
Languages: C
CAM - macOS camera recording using ffmpeg
Languages: 
JavaScript
Screenshots
(1 more screenshots available in the repository)
Clementine - Clementine is a modern music player and library organizer for Windows, Linux and macOS.
Languages: C++
Website: https://www.clementine-player.org/
Screenshots
(1 more screenshots available in the repository)
Cog - Cog is an open source audio player for macOS. The basic layout is a single-paned playlist interface with two retractable drawers, one for navigating the user's music folders and another for viewing audio file properties, like bitrate.
Languages: Objective-C
Website: https://cogx.org/
eqMac2 - System-Wide Equalizer for the Mac.
Languages: C++
Screenshots
fre:ac - The fre:ac audio converter project.
Languages: C++
Screenshots
HomeRec - Lightweight native macOS app for recording system audio as high-quality WAV files using ScreenCaptureKit.
Languages: Swift
iTunes-Volume-Control - This app allows you to control the iTunes volume using volume up and volume down hotkeys.
Languages: Objective-C
Screenshots
jmc - jmc is new macOS media organizer.
Languages: Swift
Screenshots
(1 more screenshots available in the repository)
Karaoke Forever - Host awesome karaoke parties where everyone can queue songs from their phone's browser. Plays MP3+G and MP4 with WebGL visualizations.
Languages: JavaScript
Website: https://www.karaoke-eternal.com/
Screenshots
LocalRadio - LocalRadio is software for listening to "Software-Defined Radio" on your Mac and mobile devices.
Languages: Objective-C
Screenshots
LosslessCut - The swiss army knife of lossless video/audio editing without re-encoding.
Languages: JavaScript
Website: https://mifi.no/losslesscut/
Screenshots
LyricGlow - macOS application displaying synchronized lyrics with animated word-by-word glow effects for Spotify, Apple Music, and YouTube Music.
Languages: JavaScript
Screenshots
Lyricism - macOS app to show you lyric what currently iTunes or Spotify is playing.
Languages: Objective-C Swift
Screenshots
LyricsX - Lyrics for iTunes, Spotify and Vox.
Languages: Swift
Screenshots
(1 more screenshots available in the repository)
MonitorControl - Control your external monitor brightness, contrast or volume directly from a menulet or with keyboard native keys.
Languages: Swift Objective-C
Screenshots
Mous Player - Simple yet powerful audio player for BSD/Linux/macOS.
Languages: C++
Screenshots
<img src='https://raw.githubusercontent.com/bsdelf/mous/ma
这是一份由社区共同维护的 macOS 开源应用精选列表，按音频、备份、浏览器、聊天、加密货币、数据库、开发、编辑器、图形、效率工具、实用工具等分类整理，目前约收录 710 个应用，共 49 个分类。