Arturia BeatStep-Pro BK MIDI/Analog Controller and Sequencer-Black - Canada's Favourite Music Store - Acclaim Sound and Lighting
Roland MC80
midi – FluxWithIt.com
Arturia Beatstep Pro Controller and Sequencer — DJ TechTools
ADSR Sounds "HEXCEL" Harmonic Table-based Generative MIDI Sequencer that generates midi patterns using semi-random routing and visual Harmonic Table note-layout that works with any synth that accepts MIDI - Intro Price ($17.99)
The Best Generative Sequencers For Electronic Music
MIDI Sequencer – Apps on Google Play
Happy birthday MIDI 1.0: Slave to the rhythm • The Register