DefleMask - An old-school game music tracker for an ample variety of systems.
FamiTracker - FamiTracker is a free windows tracker for producing music for the NES/Famicom-systems.
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.
Prototracker - Cross-platform fakebit chiptune tracker
Schism Tracker - Schism Tracker is a free reimplementation of Impulse Tracker, a program used to create high quality...
MilkyTracker - MilkyTracker is an open source, multi-platform music application for creating .MOD and .