liblo is a lightweight library that provides an easy to use implementation of the Open Sound Control (OSC) protocol.

normalize is an audio track normalizer. For a collection of tracks with varying volumes, it is able to make the loudness consistent between them. This is helpful when making mixtapes, for example. It can work with WAV and MP3 files.

ZToolkit (Ztk) is a cross-platform GUI toolkit heavily inspired by GTK. It handles events and low level drawing on behalf of the user and provides a high-level API for managing the UI and custom widgets. ZToolkit is written in C and was created to be used for building audio plugin UIs, where the dependencies often need to be kept to a minimum.

FAAD2 is an MPEG-4 and MPEG-2 AAC decoder supporting LC, Main, LTP, SBR, -PS, and DAB+.

cli-visualizer displays fast-Fourier transforms (FFTs) of the sound being played, as well as other graphical representations.

lv2lint is an LV2 lint-like tool that checks whether a given plugin and its UI(s) match up with the provided metadata and adhere to well-known best practices.

RSound allows you to send audio from an application and transfer it directly to a different computer on your LAN network. It is an audio daemon with a much different focus than most other audio daemons.

FAudio is an XAudio reimplementation that focuses solely on developing fully accurate DirectX Audio runtime libraries.

Zita convolver is a C++ library providing a real-time convolution engine.

libebur128 is a C library that implements the EBU R 128 standard for loudness normalisation.

C.A.V.A. is a bar audio spectrum visualizer for the terminal using ALSA, MPD, PulseAudio, or a FIFO buffer as its input.

The jack_mixer is a GTK+ JACK audio mixer app with a look & handling similar to hardware mixing desks. It has lot of useful features, apart from being able to mix multiple JACK audio streams.

Cuetools is a set of programs that are useful for manipulating and using CUE sheet (cue) files and Table of Contents (toc) files. CUE and TOC files are a way to represent the layout of a data or audio CD in a machine-readable ASCII format.

The Portable C Audio Library (pcaudiolib) provides a C API to different audio devices such as ALSA or PulseAudio.

An LV2 port of the mda Piano VSTi.

SBSMS (Subband Sinusoidal Modeling Synthesis) is software for time stretching and pitch scaling of audio. This package contains the library.

This package provides python bindings for libsndfile based on CFFI and NumPy.

This package provides a LADSPA plugin to manipulate the stereo width of audio signals.

Tao is a software package for sound synthesis using physical models. It provides a virtual acoustic material constructed from masses and springs which can be used as the basis for building quite complex virtual musical instruments. Tao comes with a synthesis language for creating and playing instruments and a C++ API for those who would like to use it as an object library.

QJackRcd is a simple graphical stereo recorder for JACK supporting silence processing for automatic pause, file splitting, and background file post-processing.

This package provides libshout plus IDJC extensions.

The LV2 Toolkit (LVTK) contains libraries that wrap the LV2 C API and extensions into easy to use C++ classes. It is the successor of lv2-c++-tools.

Control a Jack server. Allows you to plug various sources into various outputs and to start, stop and configure jackd

This project is a rebirth of a direct integration between Bluez and ALSA. Since Bluez >= 5, the built-in integration has been removed in favor of 3rd party audio applications. From now on, Bluez acts as a middleware between an audio application, which implements Bluetooth audio profile, and a Bluetooth audio device. BlueALSA registers all known Bluetooth audio profiles in Bluez, so in theory every Bluetooth device (with audio capabilities) can be connected. In order to access the audio stream, one has to connect to the ALSA PCM device called bluealsa. The device is based on the ALSA software PCM plugin.