K-Whooms

One of the first plugins I've tried in Linux. Well, nice UI (for night sessions;-)), interesting filters (comb sometimes really surprises me) and simple controls. I'd say it resembles me GR-8 by Phuturetone, but with less functionality. No effects (besides delay and distortion), so it should be combined with external ones.

Not the best overall, but definitely worth trying.

Not the most impressive sound wise or functionally, however very effective for analog sounds, especially with the modulation matrix and the incredibly easy to use UI.