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.
Cubasis - Cubasis is Steinberg’s streamlined, multitouch sequencer for the iPad.
SunVox - SunVox is a small, fast and powerful modular synthesizer with pattern based sequencer (tracker).
Serato Studio - Intuitive beat making software for beginners, DJs, and advanced producers. Spend less time hitting roadblocks and more time making music with Serato Studio.
iMaschine - iMASCHINE puts professional groove production in the palm of your hand.
Beat-J - Make beats and produce music tracks. Make your own cool tracks with BEAT J.