troubastack ~ Sheet-music & Lyrics Annotation


Collaborative sheet-music & lyrics annotation for bands and ensembles: a reactive web editor (TroubaStudio), an authoritative Go sync core (TroubaCore), and an offline mobile presenter (TroubaStage).

github.com/yoda-jm/troubastack

PearTune ~ Peer-To-Peer Music Player


Play a music collection that lives on a computer at home, from anywhere. It can be your computer or a friend’s. No port forwarding, no VPN, no account and no cloud copy of your files.

peerloomllc.com/peartune
github.com/peerloomllc/peartune

Glacier EQ ~ USB DAC Parametric EQ


Cross-platform parametric EQ editor for USB DACs. Offline, direct Tauri+React app for desktop and Android.

glacier eq user interface

github.com/Bukutsu/glacier-eq

RackForge ~ Playable Musical Instrument Host


RackForge is a cross-platform instrument and live-performance host. Connect a MIDI keyboard, choose an instrument, combine sounds into Racks, organize a show into Songs and Setlists, and play without building a DAW session first.

RackForge uses the same musical model on Windows, Linux, Android, and Raspberry Pi. Portable .rfplugin instruments bring their sound and interface with them, while RackForge owns the audio, MIDI, routing, presets, and live performance workflow.

RackForge v0.1.x is a public preview. It is ready to explore and play, but native packages are not yet production-signed.

github.com/kalexis1994/rackforge

PixelPlayerOSS ~ Android Music Player


Free and open-source edition of PixelPlayer – a modern offline music player for Android built with Jetpack Compose, Media3 & Material 3. Available on F-Droid.

github.com/PixelPlayerHQ/PixelPlayerOSS

WhatChord ~ Realtime Chord Identification


WhatChord is an interactive chord identification, key detection, and harmony exploration app. Identify voicings from live Bluetooth or USB MIDI input or manual note entry, follow the key as you play, then explore chords, scales, keyboard patterns, and harmonic context. It is optimized for speed, accuracy, and musician-expected naming, favoring stable, conventional interpretations over simple note-matching.

WhatChord User Interface

whatchord.earthmanmuons.com
github.com/EarthmanMuons/whatchord

SimpMusic ~ Cross-platform Music App


A FOSS YouTube Music client for Android and Desktop with many features from
Spotify, SponsorBlock, ReturnYouTubeDislike using Compose Multiplatform to develop.

Features:

  • Play music from YouTube Music or YouTube for free, without ads and in the background
  • Three Now Playing styles: Classic, Material 3 Expressive and Apple Music (NEW)
  • Ten-band equalizer with presets and AutoEq headphone profiles (NEW)
  • SimpMusic Wrapped: your year in music, plus monthly recap playlists (NEW)
  • On-device listening analytics: charts, period history, listening clock (NEW)
  • Word-by-word Apple Music-style lyrics, romanization for 12 languages, share lyrics as an image (NEW)
  • Home screen widgets: turntable, playlists and listening insights (NEW)
  • High quality up-to 256kbps stream (Opus or AAC) for YouTube Music Premium users
  • Browsing Home, Charts, Podcast, Moods & Genre with YouTube Music data at high speed
  • Search everything on YouTube
  • Spotify Canvas supported
  • Power your experience with SimpMusic Chart (chart.simpmusic.org)
  • Play 1080p video option with subtitle
  • AI song suggestions
  • Import playlists converted from Spotify and other apps
  • Customize your playlist, synced with YouTube Music
  • Notifications from followed artists
  • Caching and offline playback support
  • Crossfade with DJ-style like Apple Music
  • Customizing THEME (Light, Dark, Color, etc)
  • Synced lyrics from SimpMusic Lyrics, LRCLIB, Spotify (require login) and YouTube Transcript – AI lyrics translation (BETA) (*)
  • Personalize data (**) and multi-YouTube-account support
  • Last.fm scrobbling (Full version)
  • Supports SponsorBlock and Return YouTube Dislike
  • Sleep Timer
  • Android Auto with online content, feature rich UI/UX
  • Discord Rich Presence support
  • Listen Together: shared rooms that play in sync with friends, compatible with Metrolist (NEW)
  • And many more!

(*) Use your OpenAI or Gemini API key
(**) For users who chose “Send back to Google” feature

www.simpmusic.org
github.com/maxrave-dev/SimpMusic

JellyBox ~ Jellyfin Music Player


This is unofficial audio client for app. Currently it supports macOS, iOS and android via APK file. I’m also working on adding Linux(deb) support and windows.

jellybox interface

github.com/avdept/JellyBoxPlayer
sourceforge.net/projects/jellybox.mirror

Resources:

jellyfin.org

24seven.fm Covers ~ Radio Cover Art


Cover-art for the 24seven.fm family of internet radio stations — Streaming Soundtracks, 1980s.FM, Adagio.FM, Death.FM, and Entranced.FM. A shared, host-agnostic C++ engine drives three Windows front-ends plus a cross-platform core library:

ComponentDirectoryOutputBuild system
Desktop viewerdesktop/24sevenfm_covers.exe
(x64, self-contained)
MSBuild (.vcxproj / .sln)
Winamp pluginwinamp/gen_24sevenfm_covers.dll
(x86 / 32-bit)
CMake
foobar2000 componentfoobar2000/foo_24sevenfm_covers/foo_24sevenfm_covers.dll
(x64)
MSBuild
(.vcxproj)
Core librarylib/coverfetch static lib (cross-platform)CMake

All three front-ends share the same Direct2D renderer (shared/d2d_*.cpp), the cover engine (shared/cover_engine.* — cover preload, crossfade/flip transitions, remaining-time countdown), the options page (shared/options_*), and the networking/parse library (lib/). The library alone (lib/) is portable C++11 and already cross-compiles for Android/iOS.

github.com/pke/24sevenfm_covers

Fender Studio ~ Record, Jam & Create


Record, jam, and capture your creativity whenever and wherever it strikes. Packed with authentic Fender tones, Fender Studio is fast, fun, and free for guitar players and music creators of all types.

fender.com/pages/fender-studio-app

innertune ~ Android Youtube Client


A Material 3 YouTube Music client for Android.

Features:

  • Play songs from YT/YT Music without ads
  • Search songs, videos, albums, and playlists from YouTube Music
  • Cache and download songs for offline playback
  • Background playback
  • Synchronized lyrics
  • Audio normalization
  • Android Auto support
  • Discord Rich Presence support
innertune user interface

github.com/z-huang/InnerTune
sourceforge.net/projects/innertune.mirror

Music-DJ ~ MusicDJ Recreated


A recreation of the music making app found on Sony Ericsson devices of the 2000s.

Features:

  • Create songs using the original samples
  • Open original MusicDJ MIDI files
  • Export the songs to the .wav format
  • Both a Dark and a White theme are available, more in the future

github.com/pattlebass/Music-DJ