Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.
Renoise - Renoise is a digital audio workstation.
WaveShop - Open source audio editor
DJ Mix Studio - DJ Mix Studio is full-featured and complete audio mixing software for both professional and novice DJ. DJ Mix Studio's innovative feature set, and user friendly interface will insure that you perform great audio mixes.
TwistedWave - TwistedWave is one of the unique audio editors that allow you to edit your music file online without any installation.
Nuendo - Steinberg steht weltweit für professionelle Audio Software- und Hardware-Lösungen.