A C and C++ Library + a compiler to create Adobe Flash SWF movies up to version 9 (v1.8.1). Supports nearly all the tags, includes an ActionScript compiler. Detailed docs and other tools: convert fonts to Flash, decompile Flash, jpg2swf. LASTEST IS 1.8.4
Wacvst (windows-mac vst) is a tool that will wrap Windows native VSTs for use with Intel Mac OS X based VST hosts.
MediaPipe is a flexible framework to manipulate medias. It allows building customized decoding/filtering/encoding pipelines. This project contains the MediaPipe SDK along with some sample pipes.