Hex is a free multi-track MIDI sequencer that facilitates music composition in microtonal tunings. It integrates seamlessly with the DT-enabled synthesizers, or with any standard MIDI synthesizer. Moreover, it can also be used in conjunction with a digital audio workstation such as Pro Tools, Logic, Steinberg Cubase, Cockos Reaper, Ableton Live, Tracktion or Cakewalk SONAR.
The MPG64-A (Midi Pattern Generator 64 Alpha) is a free 64 step midi sequencer designed to run on Win 7, Windows Vista or XP with a minimum screen resolution of 1024×768.
Quantum is a performance midi sequencer which approaches music composition with an interactive creation processes – sometimes referred to as ‘noodling’.
MbiraGen is a free semi-generative sequencer vst plugin that produces MIDI notes based on a sequence of up to 12 “melodies”. Each melody can have up to 4 variations which are selected round-robin. A Melody is a 5×4 grid where the vertical direction indicates note pitch and the horizontal direction indicates time.
The Random Midi Arranger is a free stand-alone Windows based program that can generate random midi songs at the click of a single button. It uses a combination of preset midi clips and sets of rules called ‘Manipulators’ to generate each instrument track. It also features a ‘Render Engine’ which determines song structure, track density, repetitions, tempo, etc. The results can then be exported to a midi file for further editing.