FL Studio - Image-Line's FL Studio, now on it's 12th version, is a well-known music production suite and the most popular beat processor on the market, due no doubt to its longevity. Read more about FL Studio.
SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).
Reaper - Reaper is a focused digital audio workstation (DAW) developed by Cockos. In the creation of the software, the digital audio technology company intended to make audio editing accessible to the masses.
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.
Music Studio - Music Studio offers a complete music production environment for the iPad/iPhone/iPod touch with...
MOTU Digital Performer - Get inspired, then refine your mix — all in a singular workflow.