FamiStudio - FamiStudio is very simple music editor for the Nintendo Entertainment System or Famicom. It is designed to be easier to use than FamiTracker, but its feature set is also much more limited.

Surge XT - Open-source subtractive-hybrid synthesizer formerly sold commercially as Vember Audio Surge.

SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).

ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.

Cubasis - Cubasis is Steinberg’s streamlined, multitouch sequencer for the iPad.

Auxy Music Studio - Auxy brings real music creation to iPhone in a simple and inspiring format.