FMIT is a graphical utility for tuning musical instruments, with error and volume history, and advanced features.

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

SooperLooper is a live looping sampler capable of immediate loop recording, overdubbing, multiplying, reversing and more. It allows for multiple simultaneous multi-channel loops limited only by your computer's available memory.

GNU Solfege is a program for practicing musical ear-training. With it, you can practice your recognition of various musical intervals and chords. It features a statistics overview so you can monitor your progress across several sessions. Solfege is also designed to be extensible so you can easily write your own lessons.

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.

GXtuner is a simple guitar tuner for JACK with an analogue-like user interface.

This package provides the LV2 plugin "GxGuvnor", a simulation of an overdrive or distortion pedal for guitars.

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.

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.

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.

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.

Flacon extracts individual tracks from one big audio file containing an entire CD of music and saves them as separate audio files. To do this, it uses information from the appropriate CUE file. Also, Flacon makes it possible to conveniently revise or specify tags both for all tracks at once or for each tag separately.

isrcsubmit is a tool to extract International Standard Recording Code (ISRCs) from audio CDs and submit them to MusicBrainz.

The Non Session Manager is an API and an implementation for audio session management. NSM clients use a well-specified OSC protocol to communicate with the session management daemon.

This package provides the LV2 plugin "GxSuppaToneBender", a simulation modelled after the Vox Suppa Tone Bender pedal.

Yoshimi is a fork of ZynAddSubFX, a feature-heavy real-time software synthesizer. It offers three synthesizer engines, multitimbral and polyphonic synths, microtonal capabilities, custom envelopes, effects, etc. Yoshimi improves on support for JACK features, such as JACK MIDI.

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

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.

Frescobaldi is a LilyPond sheet music text editor with syntax highlighting and automatic completion. Among other things, it can render scores next to the source, can capture input from MIDI or read MusicXML and ABC files, has a MIDI player for proof-listening, and includes a documentation browser.

This package provides the LV2 plugin "GxSlowGear", a slow gear audio effect to produce volume swells.

This is the C implementation of the ORCΛ language and terminal livecoding environment. It's designed to be power efficient. It can handle large files, even if your terminal is small.

Orca is not a synthesizer, but a flexible livecoding environment capable of sending MIDI, OSC, and UDP to your audio/visual interfaces like Ableton, Renoise, VCV Rack, or SuperCollider.

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

The VL1-Emulator is an emulator of Casio VL-Tone VL1, based on source code by PolyValens, offered as an LV2 plugin and a standalone JACK application.

Abjad helps composers build up complex pieces of music notation in iterative and incremental ways. Use Abjad to create a symbolic representation of all the notes, rests, chords, tuplets, beams and slurs in any score. Because Abjad extends the Python programming language, you can use Abjad to make systematic changes to music as you work. Because Abjad wraps the LilyPond music notation package, you can use Abjad to control the typographic detail of symbols on the page.