ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
FIEND.fm - "Hot or Not" for music discovery: 2 hrs of tracks in 2 mins
cassini - Polyphonic Synthesizer for iPhone/iPod touch
Pacemaker - Create and share mixtapes with friends
nlog Synth - Professional Virtual Analogue Synthesizer ::: check nlogmusic at YouTube :::
Boil the Frog - Create a seamless playlist between any two artists