tramp wrote:The OWL is a other open source hardware pedal, which is open in hard and software as well.
It is available both as a guitar fx pedal and a Eurorack synthesizer module.
Yeah, but still not a standalone synth. I've heard of most all these (Preen excepted) and AFAIK only MeeBlip, PreenFM, and Zynthian are open HW standalone synths. And Zynthian is the only one using linux and open softsynths rather than a dedicated baremetal firmware.
EDIT: (Not that I'm trying to disparage MOD, OWL, Axoloti, Bella, or any of those, but none of them are what zynthian is. Actually MOD is closest, but its not open HW, and again the synth workflow is rather awkward on it)