Luppp is a music creation tool, intended for live use. The focus is on real time processing and a fast and intuitive workflow. With extensive MIDI mapping support, you can get looping just how you like!

The main goal of liquidsfz is to provide an SFZ sampler implementation library that is easy to integrate into other projects. A standalone JACK client and an LV2 plugin is also available.

This plugin for beets automatically obtains tag data from https://bandcamp.com/. It's also capable of getting song lyrics and album art using the beets FetchArt plugin.

TuxGuitar is a guitar tablature editor with player support through midi. It can display scores and multitrack tabs. TuxGuitar provides various additional features, including autoscrolling while playing, note duration management, bend/slide/vibrato/hammer-on/pull-off effects, support for tuplets, time signature management, tempo management, gp3/gp4/gp5 import and export.

Aj-snapshot is a small program that can be used to make snapshots of the connections made between JACK and/or ALSA clients. Because JACK can provide both audio and MIDI support to programs, aj-snapshot can store both types of connections for JACK. ALSA, on the other hand, only provides routing facilities for MIDI clients. Aj-snapshot is meant to be used from the command line.

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

XUiDesigner parses an LV2 plugin's ttl file and generates the needed controller widgets. The created GUI can be saved as UI-Bundle, which then could be built and installed. For later editing of the UI, a JSON file is added, which you could load per drag 'n drop into XUiDesigner.

pysmf is a Python extension module for reading and writing Standard MIDI files, based on libsmf.

This package provides the LV2 plugin "GxSwitchlessWah", a simulation of an analog Wah pedal with switchless activation.

Glyr comes both in a command-line interface tool (glyrc) and as a C library (libglyr).

The sort of metadata glyr is searching (and downloading) is usually the data you see in your musicplayer. And indeed, originally it was written to serve as internally library for a musicplayer, but has been extended to work as a standalone program which is able to download cover art, lyrics, photos, biographies, reviews and more.

Musikcube is a terminal-based music player, library, and streaming audio server.

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

PatchMatrix is a patch bay for the JACK audio connection kit. It provides a patch bay in flow matrix style for audio, MIDI, CV, and OSC connections.

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

amsynth is an easy-to-use software synthesizer with a classic subtractive synthesizer topology. Its features include: dual oscillators (sine, saw, square, noise) with hard sync; 12 and 24 dB/oct resonant filters (low-pass, high-pass, band-pass, notch); mono, poly, legato keyboard modes; dual ADSR envelope generators for filter and amplitude; LFO which can modulate the oscillators, filter, and amplitude; distortion and reverb effects.

Aria Maestosa is a MIDI sequencer and editor. It lets you compose, edit and play MIDI files with a few clicks in a user-friendly interface offering score, keyboard, guitar, drum and controller views.

Fooyin is a customisable desktop music player. It combines flexible playback, library management, playlists, and scripting tools in an interface that can be rearranged from a blank canvas or adapted from preset layouts. It's built around extensibility and supports plugins for widgets, decoders, tag readers, DSPs, and integrations, and includes FooScript for advanced display formatting, queries, autoplaylists, and widget behaviour.

Music21 is a set of tools for helping scholars and other active listeners answer questions about music quickly and simply.

This package provides the LV2 plugin "GxVoodooFuzz", a simulation modelled after the Voodoo Lab SuperFuzz pedal. It's basically a Bosstone circuit, followed by the tone control of the FoxToneMachine in parallel with a DarkBooster, followed by a volume control.

Power Tab Editor 2.0 is the successor to the famous original Power Tab Editor. It is compatible with Power Tab Editor 1.7 and Guitar Pro.

Audacious is an audio player descended from XMMS. Drag and drop folders and individual song files, search for artists and albums in your entire music library, or create and edit your own custom playlists. Listen to CD’s or stream music from the Internet. Tweak the sound with the graphical equalizer or experiment with LADSPA effects. Enjoy the modern GTK-themed interface or change things up with Winamp Classic skins. Use the plugins included with Audacious to fetch lyrics for your music, to set an alarm in the morning, and more.

Sorcer is a wavetable LV2 plugin synthesizer, targeted at the electronic or dubstep genre.

Drumkv1 is an old-school drum-kit sampler synthesizer with stereo effects.

Drumstick is a set of MIDI libraries using C++/Qt5 idioms and style. It includes a C++ wrapper around the ALSA library sequencer interface. A complementary library provides classes for processing SMF (Standard MIDI files: .MID/.KAR), Cakewalk (.WRK), and Overture (.OVE) file formats. A multiplatform realtime MIDI I/O library is also provided with various output backends, including ALSA, OSS, Network and FluidSynth.