Glitch Sequencer is a
free cellular
automaton based MIDI sequencer for the PC and Mac. It offers an
interesting style of composition based on evolving patterns and is great
for fast, fluid experimentation.
Sequin is a monophonic step sequencer made with
Synthedit. It can create 1 bar patterns with 8, 12, or 16 steps which
are triggered from a MIDI note on event. When the sequencer is turned
off, it can be played like a regular monophonic synthesizer.
Gater is a 16th-note
(semi-quaver) gate sequencer or 'trance' gate. It features an easy to
use GUI with a handy randomize feature to invent new gate patterns. Two
click-free gate shapes are available. The Gater uses very little CPU
power or screen space and is compatible with VST 2.4.