Mutagen is a Python module to handle audio metadata. It supports ASF, FLAC, M4A, Monkey’s Audio, MP3, Musepack, Ogg FLAC, Ogg Speex, Ogg Theora, Ogg Vorbis, True Audio, WavPack and OptimFROG audio files. All versions of ID3v2 are supported, and all standard ID3v2.4 frames are parsed. It can read Xing headers to accurately calculate the bitrate and length of MP3s. ID3 and APEv2 tags can be edited regardless of audio format. It can also manipulate Ogg streams on an individual packet/page level.

x42-plugins is a collection of over 80 cross-platform LV2 audio and MIDI plugins that can also run as standalone JACK applications.

Wolf Shaper is a waveshaper plugin with a graph editor. It is provided as an LV2 plugin and as a standalone Jack application.

ZynAddSubFX is a feature heavy realtime software synthesizer. It offers three synthesizer engines, multitimbral and polyphonic synths, microtonal capabilities, custom envelopes, effects, etc.

The 6581 SID chip is the sound chip used in the Commodore 64 computer. reMID is a MIDI implementation of the 6581 SID chip using the reSID library to provide a virtual SID-based synthesizer, controllable in real-time via MIDI. It includes support for scripted instruments that allow complex sonic control of the chip.

This package provides an LV2 plugin that allows for pattern-controlled MIDI amp & time stretching to produce shuffle / swing effects.

Key features include:

1. MIDI velocity amplification and timing manipulation plugin

2. Swing and shuffle rhythms

3. Pre-generator dynamics

4. Tempo rubato

5. Pattern (sliders) or shape-controlled

6. MIDI filters

7. Smart quantization

Mixxx is a DJ software. It integrates the tools DJs need to perform creative live mixes with digital music files.

This package provides the LV2 plugin "GxToneMender", a clean boost effect with a 3-knob tonestack.

This project is a fork of the Android Open Source Project platform_external_sonivox. It is a Wave Table synthesizer, using embedded samples. It also supports external DLS soundfont files. It is also a real time GM synthesizer.

B.Shapr is a beat/envelope shaper LV2 plugin.

Rosegarden is a music composition and editing environment based around a MIDI sequencer that features a rich understanding of music notation and includes basic support for digital audio.

klick is an advanced command-line based metronome for JACK. It allows you to define complex tempo maps for entire songs or performances.

Le Biniou is a music visualization & VJing tool. It creates live visuals based on audio performances or existing tracks.

InstantMusic downloads a song from YouTube in MP3 format. Songs can be searched by artist, name or even by a part of the song text.

mididings is a MIDI router/processor based on Python, supporting ALSA and JACK MIDI. Features include:

• MIDI routing and filtering; filter events depending on their event type, channel, note number, velocity, etc., and freely route them between an arbitrary number of input and output ports.

• Modifying and converting MIDI events; transpose notes, apply velocity curves, change controller values and ranges, or convert events to any other MIDI event type. mididings also includes more complex functions like a diatonic harmonizer, floating split points, latched notes, and more.

• Seamless switching between patches; set up different "scenes", each with its own MIDI routing and processing, and switch between them at any time, even while playing. Switching scenes does not affect notes already held, and does not result in dropouts or stuck notes!

• MIDI event monitoring, running external commands; print MIDI event data to the console to help debugging your patches and configuring your MIDI controllers. In addition to its MIDI output, mididings can also execute shell commands and send OSC or DBUS messages.

MilkyTracker is a music application for creating .MOD and .XM module files. It attempts to recreate the module replay and user experience of the popular DOS program Fasttracker II, with special playback modes available for improved Amiga ProTracker 2/3 compatibility.

cTune is a ncurses based internet radio player written in C for Linux. Aside from playing a radio stream you can search and browse stations as well as keep a list of favourites. It uses the RadioBrowser API to search and get radio stream information.

Musicbrainzngs implements Python bindings of the MusicBrainz web service. This library can be used to retrieve music metadata from the MusicBrainz database.

The jalv.select package provides a graphical user interface allowing users to select LV2 plugins and run them with jalv.

Stargate is a digital audio workstation with built-in instrument and effect plugins and wave editor, providing innovative features, especially for EDM production.

TAP (Tom's Audio Processing) plugins is a collection of audio effect plugins originally released as LADSPA plugins. This package offers an LV2 version ported by moddevices.

musl is a simple and lightweight C standard library. It strives to be correct in the sense of standards-conformance and safety.

Myrddin is a programming language. It features strong type checking, generics, type inference, closures, and traits. It aims for C like low level control. This combination makes Myrddin suitable for anything ranging from desktop applications, to embedded systems and potentially even kernel development.

Ncdu is a disk usage analyzer with an ncurses interface, aimed to be run on a remote server where you don't have an entire graphical setup, but have to do with a simple SSH connection. ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like environment with ncurses installed.