Registration is now open for CommunityOne West, June 1-3, 2009, San Francisco.

Get up to speed on dozens of free and open-source projects driving innovation in cloud computing, Web application development, social and collaborative technologies, and more.

The main conference on Monday, June 1, is free, but space is limited. Deep Dive tutorials on Tuesday, June 2, and Wednesday, June 3, require a fee.

Registration information is here.