At the core of my musicmaking circa 2007 is Apple's Logic Pro 7 software running on a Dual 1.8 G5 Mac. I play in certain elements of tracks with an M-Audio Keystation 49. Below is a list of some of the audio software I've used most often during recent production:

LogicPro _____ Logic Pro 7
n-icon3 _____ Numerology
LiveAppIcon _____ Ableton Live
ahijack _____ Audio Hijack
iTunesHelper _____ iTunes
KEGS _____ KEGS OS X
noiser icon _____ Noiser