Quick! You need a step sequencer!
Sometimes you want a full-featured sequencing tool and your host doesn’t have one (or it doesn’t do what you want). HY-SEQ16 is a terrific, versatile option.
I could talk about the whole feature set but: randomize. Probability controls. There you have it.
Okay, also, preset management, separate randomization per parameter (ooh), sequence direction – basically everything you need. If you really fall in love with this one, US$28 buys you 3×16 steps and an LFO.

This looks great to me, not least for controlling external hardware. Heck, I thought I didn’t need it, and now I realize I do.
As so often with great freebies, this comes to us from Bedroom Producers Blog (BPB), who also have a nice video (from before this version was free):
http://bedroomproducersblog.com/2017/01/31/hy-seq16x3/
Super.
Download this:
http://hyakken.moo.jp/WordPress/product/hy-seq16x3/
Lots of power and potential, especially for the price!
It’s Mac as well BTW.
Only $14 if you already own the M4L sequencer pack and the GUI is resizable too
Also, hes currently porting MPS to VST and then the seqcollection will follow.
Bye Bye Live and M4l 😀