K-Whooms by Hansen Audio is a FREE virtual analog synth for Windows and Linux

Hansen Audio’s K-Whooms is a free virtual analog synthesizer available for Windows and Linux. It first appeared in 2024 and was updated in 2025, but we haven’t featured it on BPB until now. I’ve been getting more requests to cover Linux-compatible software on BPB, and K-Whooms somehow flew under my radar. It was mentioned in