SVS, or Social Versioning System, is Simon Yuill's neat take on version control and collaborative development. I haven't quite figured out exactly what SVS is, but it looks like a toolkit for building collaborative development tools.
Even cooler, SVS is being put to use for the development of spring_alpha, a networked game designed to explore development and experimentation with social practices, in both software production and game design. One of my (many!) rejected NSF grant proposals essentially had these concepts as the kernel of a research program. But the software in the proposal was a bit vaporous. I'll have to keep svs/spring_alpha in the back pocket for future attempts.
Oh yeah, Python inside!!