Adobe Audition

Adobe Audition screenshots

Adobe Audition CS5.5 is for recording, mixing, and sound restoration
Frequency analysis
Adobe Audition 4.0 : Frequency analysis

Alternative downloads

DJ Mix Master
Make your own music mixes, apply various effects, etc.
MS2K Patch Buddy
MS2K Patch Buddy is a librarian and SysEx transfer tool.
Cool Paint
Painting software for drawing and image editing .