projectM PulseAudio Visualization
Visualization of PulseAudio streams with projectM

sonic-pi
The Live Coding Music Synth for Everyone

Ubuntu Studio Controls
Setup Audio, Video and Graphics
x42-spectr
Spectrum Analyzer
zita-dpl1
A look-ahead digital peak level limiter

MuseScore 3 Snapshot package (3.0.1 unstable)
Create, play and print sheet music
DragonflyReverb
A free hall-style reverb based on freeverb3 algorithms

Geonkick
Synthesizes elements of percussion

QMPlay2
Watching movies and listening to music
PatchMatrix
Connect JACK clients together
PulseEffects
Audio Effects for PulseAudio Applications
QmidiCtl
MIDI Remote Controller via UDP/IP Multicast
ssr-aap
SoundScape Renderer (Ambisonics Amplitude Panner): A tool for real-time spatial audio reproduction
ssr-binaural
SoundScape Renderer (Binaural): A tool for real-time spatial audio reproduction
ssr-brs
SoundScape Renderer (Binaural Room Synthesis): A tool for real-time spatial audio reproduction
ssr-dca
SoundScape Renderer (Distance-coded Ambisonics): A tool for real-time spatial audio reproduction
ssr-generic
SoundScape Renderer (Generic): A tool for real-time spatial audio reproduction
ssr-vbap
SoundScape Renderer (Vector Based Amplitude Panning): A tool for real-time spatial audio reproduction
ssr-wfs
SoundScape Renderer (Wave Field Synthesis): A tool for real-time spatial audio reproduction
ssr
SoundScape Renderer: A tool for real-time spatial audio reproduction
SpectMorph Jack Client
SpectMorph Sound Morphing standalone Jack Client
Wolf-shaper
A waveshaper plugin with a graph editor
YASS
Yet Another Scrolling Scope

Tutka MIDI Tracker
Compose music using MIDI

Gradio
Find and listen to internet radio stations

YouTube-DL GUI
GUI for YouTube-DL

butt
broadcast using this tool

streamtuner2
Listen to shoutcast/xiph/live365 music stations

Fluajho
Sampler for sf2 soundfonts for JACK and NSM
Fluidsynth DSSI
SoundFont-playing software synthesizer
PulseAudio Volume Control Qt
Adjust the volume level

Xfmpc
MPD client written in GTK+ for Xfce

Jamulus
Jam Session

Internet Radio Locator
Locate Internet Radio Stations

LeechCraft LMP (Qt5)
Add file(s) to the LMP playlist

Enqueue in LMP
Add file(s) to the LMP playlist
Media Player Classic Qute Theater
Qt media player based on libmpv
projectM-qt5 PulseAudio Visualization
Visualization of PulseAudio streams with projectM-qt5

GMixer
Audio mixer for the Gnome Desktop Environment
Alsa Modular Synth
Real time MIDI controlled synthesizer

ams
A real-time modular synthesizer and effect processor

js8call
Amateur Radio Weak Signal Operating

Qsynth
Qsynth is a FluidSynth Qt GUI Interface

OSD Lyrics
Download and show lyrics for your favorite media player

JSampler Fantasia
Fantasia Java GUI for LinuxSampler
DragonflyHallReverb
A free stereo-to-stereo concert hall reverb effect
DragonflyRoomReverb
A free stereo-to-stereo room reverb effect

Patroneo
Easy to use pattern sequencer for JACK and NSM