Audulus - A universe of sound at your fingertips - Audulus is a modular music processing app
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Oceanaudio - Ocenaudio is a cross-platform, easy to use, fast and functional audio editor.
Blocs Wave - A free audio app for creating music loops.
GoldWave - GoldWave. Digital Audio Editing Software. Record • Restore • Convert • Analyze. Fully loaded to do everything from the simplest recording and editing to the most sophisticated audio processing, restoration, enhancements, analysis, and conversions.