a2jmidid is a daemon that implements automatic bridging of ALSA midi devices to JACK midi devices.

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

QMidiRoute is a MIDI event router and filter. MIDI note, control change, program change and pitch bend events are logged, and can be filtered, redirected and transformed into other events according to MIDI maps defined as tabs in the main control surface.

Synthpod is an LV2 host. It can be run as a standalone app and be used as a tool for live performances or general audio and event filtering.

Clementine is a multiplatform music player. It is inspired by Amarok 1.4, focusing on a fast and easy-to-use interface for searching and playing your music.

The MusicBrainz::DiscID module is a Perl interface to the MusicBrainz libdiscid library, allowing you to manipulate digital audio compact disc (CDDA) identifiers.

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

Jack-keyboard is a virtual MIDI keyboard, a program that allows you to send JACK MIDI events (i.e. play) using your PC keyboard.

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.

Samplv1 is an old-school polyphonic sampler synthesizer with stereo effects.

LMMS is a digital audio workstation. It includes tools for sequencing melodies and beats and for mixing and arranging songs. LMMS includes instruments based on audio samples and various soft sythesizers. It can receive input from a MIDI keyboard.

DSSI is a plugin API for software instruments with user interfaces, permitting them to be hosted in-process by audio applications. It is intended to be simple, GUI-toolkit-agnostic, and slightly biased towards familiarity with MIDI. The DSSI distribution package contains a JACK/ALSA-sequencer reference host and some plugins as well as the specification and header.

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.

New Session Manager (NSM) is a tool to assist music production by grouping standalone programs into sessions. It can be used create a session, or project, and add programs to it and then use commands to save, start/stop, hide/show all programs at once, or individually. The session can be interrupted and easily resumed at a later time.

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.

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.

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

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.

Bristol is an emulation package for a number of different classic synthesizers including additive and subtractive and a few organs. The application consists of the engine, which is called bristol, and its own GUI library called brighton that represents all the emulations. There are currently more than twenty different emulations; each does sound different although the author maintains that the quality and accuracy of each emulation is subjective.

Libgig is a C++ library for loading, modifying existing and creating new Gigasampler (.gig) files and DLS (Downloadable Sounds) Level 1/2 files, KORG sample based instruments (.KSF and .KMP files), SoundFont v2 (.sf2) files and AKAI sampler data. The package includes a couple of command line tools based on the library.

EasyTAG is an application for viewing and editing tags in audio files. It supports MP3, MP2, MP4/AAC, FLAC, Ogg Opus, Ogg Speex, Ogg Vorbis, MusePack, Monkey's Audio, and WavPack files.

GNU Denemo is a music notation editor that provides a convenient interface to the powerful music engraving program Lilypond. Music can be typed in using the computer keyboard, played in using a MIDI keyboard, or even input via a microphone connected to the sound card. The final product is publication-quality music notation that is continuously generated in the background while you work.

Regrader is a delay effect where the repeats degrade in resolution. This is an unofficial port of the Regrader plugin created by Igorski. It is available as an LV2 plugin and a standalone JACK application.

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.