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.
DefleMask - An old-school game music tracker for an ample variety of systems.
SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).
MilkyTracker - MilkyTracker is an open source, multi-platform music application for creating .MOD and .
Cubasis - Cubasis is Steinberg’s streamlined, multitouch sequencer for the iPad.
FamiTracker - FamiTracker is a free windows tracker for producing music for the NES/Famicom-systems.