LO-Fusion VCF is a redesign of a classic low pass OTA VCF with corrections and addons. It’s working very well on v/oct and with FM modulation on FREQ cv input.

PMFoundations released Fatkeys™ VCF, a DIY Eurorack VCF using Fatkeys™ SSI2144 from Sound Semiconductor Now you can build your own FATKEYS™ FOUR-POLE VOLTAGE CONTROLLED FILTER (SSI2144) that reprises the SSM2044