abjad-ext-nauert provides classes for dealing with composer and music theorist Paul Nauert's quantization grids or Q-Grids, for short.

Mopidy is an extensible music server written in Python. It plays music from local disk or cloud services, and can be controlled using a variety of MPD and web clients.

This package provides an MQTT interface extension for Mopidy music server.

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

Dragonfly Reverb is a bundle of two free audio effects: a concert hall reverb and a room reverb. Both are available as LV2 plugins as well as JACK standalone applications.

The Non Timeline is a powerful, reliable and fast modular digital audio timeline arranger. It utilizes JACK for inter-application audio I/O and the NTK GUI toolkit for a fast and lightweight user interface. Non Timeline can be used alone or in concert with Non Mixer and Non Sequencer to form a complete studio.

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

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

GNU cursynth is a polyphonic synthesizer that runs graphically in the terminal. It is built on a full-featured subtractive synthesis engine. Notes and parameter changes may be entered via MIDI or the computer's keyboard.

Padthv1 is an old-school polyphonic additive synthesizer with stereo effects. Padthv1 is based on the PADsynth algorithm by Paul Nasca, as a special variant of additive synthesis.

B.Choppr cuts the audio input stream into a repeated sequence of up to 16 chops. Each chop can be leveled up or down (gating). B.Choppr is the successor of B.Slizr.

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.

Zrythm is a digital audio workstation designed to be featureful and easy to use. It offers unlimited automation options, LV2 plugin support, JACK support and chord assistance.

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.

setBfree is a MIDI-controlled, software synthesizer designed to imitate the sound and properties of the electromechanical organs and sound modification devices that brought world-wide fame to the names and products of Laurens Hammond and Don Leslie.

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

LibSMF is a C library for handling SMF ("*.mid") files. It transparently handles conversions between time and pulses, tempo map handling and more. Full API documentation and examples are included.

Helm is a cross-platform polyphonic synthesizer available standalone and as an LV2 plugin.

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.

Samplebrain chops samples up into a 'brain' of interconnected small sections called blocks which are connected into a network by similarity. It processes a target sample, chopping it up into blocks in the same way, and tries to match each block with one in its brain to play in realtime.

Tuner is a minimalist radio station player to discover and listen to your favourite internet radio stations. The application consists of a radio station catalogue sourced from radio-browser.info, and has presets of selections of stations based on random, top, trending, genre.

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.

The Non Mixer is a powerful, reliable and fast modular digital audio mixer. It utilizes JACK for inter-application audio I/O and the NTK GUI toolkit for a fast and lightweight user interface. Non Mixer can be used alone or in concert with Non Timeline and Non Sequencer to form a complete studio.

This package provides the Rakarrack effects as LV2 plugins. The ports are done such that hopefully when Rakarrack gets an active maintainer these will get merged into the original project.