SunVox is a small, fast and powerful modular synthesizer with pattern-based sequencer (tracker). It is a tool for those people who like to compose music wherever they are, whenever they wish. On any device. SunVox is available for Windows, OS X, Linux, Maemo, Meego, Raspberry Pi, Windows Mobile (WindowsCE), PalmOS, iOS and Android.
Steel Skies is a graphical visualizer for iTunes.