Cognitone released Sprike
Cognitone released the free open source synhtesizer Sprike.
Sprike is an extended variant of Tunefish4, an open source virtual analog synth originally created by Brain Control. We made sure Sprike cooperates nicely in a mainly MIDI-controlled environment (MIDI sequencers), reorganized preset storage to follow MIDI standards and operating system conventions, added four new MOD sources, and enhanced it with an on-screen keyboard and a slightly changed its look.
More info and free download here: Cognitone | Sprike