GUI for Equalizer APO, Instantly Boost Your Computer's Audio.
Easy to use TV recording application.
GUI to work with abc notation
A free multi-track audio editor and recorder
An Audio/MIDI multi-track sequencer
Free media player with support for Youtube
JACK Audio Connection Kit Qt GUI Interface
Audio converter and CD ripper for various formats
A fluidsynth Qt GUI Interface
Multiplatform GUI of MP3Gain which adjusts volume of MP3 files
MuldeR's OpenSource Projects
An old-school polyphonic synthesizer
An old-school drum-kit sampler
An old-school polyphonic sampler
An old-school polyphonic additive synthesizer
Multiplatform MIDI File Player for Linux, Windows, and macOS
Network transparent, client/server audio transport system
A MIDI Remote Controller via UDP/IP Multicast
The X Jack Video Monitor
An entire virtual orchestra in LV2 plugin format