MIDIMood

This thing is amazing!!! It does have a bit of a learning curve -- you need to figure out in the context of your particular DAW how to route things correctly. But it's just pure magic after that. The basic idea is that you have two MIDI sources per instrument: (1) a pattern, (2) some chords over which to execute that pattern. You can generate very complex patterns in a short period of time. It is just far beyond any other arp, and I have bought a lot of them. I had the idea for something like this in my head, but it took me a long time to finally discover it and figure out that someone actually made this.

when i buy something, i expect support
transparency from the developer and future security
all this you will miss here that is not a good sign
for that the price is too high with this risk
the platform is not important. a win 10 user.

I was looking for a tiny but powerfull live arpegiator/sequencer plug-in and found Kameleono.

Kameleono is a real new MIDI machine, with lots of innovative features. Can be used for live play (sequences/bass lines), you can use your own MIDI files or patterns in your DAW to send rythmic sequences and play live (or send chords/notes track), Kameleono will sequence your favourite virtual instrument.

one-finger chord mode, scales, many latch modes, transpose in and out. The sequence can pick velocity/pan/mod from the rythmic pattern or input notes (or a mix of both)

Tested with Cubase, Live, and Mulab, very stable. Also tested with Bitwig demo, can't find more simple: drag/drop Kameleono, drag/drop a synth behind and you're ready to play with Kameleono's pattern presets.

Also tested with 3 instances: one for bassline, 2 for synths, all in sync, no hiccups.

If you want to use patterns on your DAW, once you have understood the way it works (one MIDI track for rythm datas > kameleono, one MIDI track for notes input > Kameleono, one MIDI track for your VSTi with Kameleono as input), it's very easy and fun to use.