Hydrogen is an advanced drum machine for GNU/Linux, Mac and Windows. It’s main goal is to bring professional yet simple and intuitive pattern-based drum programming.
ritme
A highly automated and intuitive digital audio workstation
LMMS
Let’s make music
with a free, cross-platform tool for your computer.
NO
Non is the result of one man’s desire to build a complete free-software Digital Audio Workstation on GNU/Linux that really works–on accessible hardware.
OcenAudio
Easy, fast and powerful audio editor