Cooledit
The official home of adobe soundbooth cs3. soundbooth cs3 is audio editing software for creating, polishing, editing and customizing your audio. learn more.
http://www.cooledit.com/
Cubase
Steinberg is known the world over for its professional media solutions. the company has been developing, manufacturing and selling software products for musicians and producers in the music, film, post production, and multimedia industries since 1984. steinberg products are used by grammy® and oscar® award winning composers, engineers, and producers.
http://www.steinberg.net/
SAWstudio
Rml labs provides the elite in non-linear hard disk editing software, with unparalleled design capabilities, efficiency, and
speed - featuring the highly acclaimed sawstudio - 'studio in a box' technology!
http://www.sawstudio.com/