[Omnus]

Looks like it actually implements quite a few opcodes from Csound. A quick glance makes it seem well suited toward quick integration in existing projects, with a very small footprint and codebase. Could be good for experimentation or learning low level DSP programming.

[hodefoting]

For realtime multi-voice synthesis, I keep using a not very well advertised side-project that performs reasonably well and also doesn't have a huge codebase: http://pippin.gimp.org/lyd/

[zebproj]

That's the idea!

The next step is going to be building DSP code in Faust and putting them inside of SP.