SampleWiz

New Musical Instrument - Fast self sampling music creation and MIDI controller by Jordan Rudess.

Audio Evolution

Here is a non-exhaustive list of some of the main features of Audio Evolution 5:

EasyBand Studio is an auto accompaniment tool for musicians.

Giada is a free, minimal, hardcore audio tool for DJs, live performers and electronic musicians.

Loop-Based music sequencer

Repetito: the multichannel looper software for live performance on the PC.

Soundation Studio is a web-based app that allows you to develop music with your own unique sense of creativity.