ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
SYQEL - Bring your music to life
nlog Synth - Professional Virtual Analogue Synthesizer ::: check nlogmusic at YouTube :::
Visualify - Visualize your top artists on Spotify
cassini - Polyphonic Synthesizer for iPhone/iPod touch
Spotify Web Visualizer - Beautiful full screen visuals for Spotify web player