[ColonelPhantom]

I think iCE40 LP/HX series are the biggest ones, but the iCE40UP5K is also neat: it has hardware multipliers unlike the LP/HX, and a relatively large 1 megabit RAM on-chip. Unfortunately, I think the UP family is relatively slow (as in propagation delay/max clock frequency).

[323454]

Thanks for pointing this out! The UP5K does look promising.