Hydrogen - Hydrogen is an advanced drum machine.
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.
drumbit - A very easy to use drum machine.
SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).
HTML5 Drum Machine - The HTML 5 Drum Machine is a browser-based drum machine inspired by the classic Roland TR-808.
MOTU Digital Performer - Get inspired, then refine your mix — all in a singular workflow.