Same in OpenArena, the organisation is quite messy. There are some modelers, coders, people who make maps in the hope of making it to releases... But nothing is really organized. Releases are not planned, and when they are planned they easily go 3 months overdue. But there is progress, and I think the game is already fairly complete as it is. Thousands of players seem to think so too.

OpenArena's goal is to make a completely open-source and free Quake 3 clone with some additions like delag, and it's actually the opensource competitor for Quake Live. It could use some more developers I think :)