SpotiMy - Play/Pause and Next/Previous functions for Spotify directly on your Menu Bar!
UVI Falcon - Sampler/synth hybrid instrument
Muzzy - it’s a tiny and gorgeous iTunes companion that lives on your menu bar. For Mac OSX, its free!
Pianoteq - Pianoteq is a virtual piano that runs on your computer.
Owlead - Grow your Twitter with valuable followers, effortless
LinuxSampler - LinuxSampler - free, open source pure software audio sampler with professional grade features.