orDrumbox is a fully-featured drum machine and audio sequencer that is pattern oriented, has an automatic composer, automatic sound assignations, custom drum kits, loop support, and the ability to import and export songs. Its main features are a pattern seqencer, a drumkit editor, a piano roll, a step sequencer, sound generation, soft synth, and the ability to import and export MIDI files and Wave files.
probability sequencing language is a text based piano roll language for csound that is inspired by the probability in Jeskola Buzz, but with more control than you can get in a MIDI based envirement. Every note has a chance of hitting unless it is marked with an x. The frequency on the roll is entirely up to the user.