MOTU Digital Performer - Get inspired, then refine your mix — all in a singular workflow.
Google Music Lab - Interactive experiments that use the Web Audio API
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.
YuMe - A multi-screen video advertising company providing digital video brand advertising solutions.
SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).
Cheese Posties - Ready-to-grill cheese sandwiches in the mail