www.kvraudio.com/news/sonicbirth_updated_to_v1_2_now_free_open_source_6947
19th March 2007
SonicBirth, the Mac OS X Audio Unit / VST designing application that allows users to build their own Audio Unit / VST plugins, either by working with existing circuits or by creating circuits completely from scratch, has been updated to version v1.2.0 and released as freeware and open-source (GPL) (available on SourceForge).
Changes:
KVR Audio, Inc.
www.kvraudio.com