In a few days, a new addition to nxtasy.org is coming up! The first (unofficial) NXT-related code repository is about to go live! This section of nxtasy.org site will contain user-contributed programs, contributed MyBlocks and in the future (when SDK is published) new NXT-G blocks.
A discussion topic dedicated to the new repository can be found on the forums: http://forums.nxtasy.org/index.php?showtopic=72
Other comments/contributions should be sent to guy@nxtasy.org