BuddyPress.org

I used to use something called b2 cafelog and loved how easy it was to hack on it and make it do what I wanted. I even extended it so my Linux user group could make their own blogs. Unfortunately, the b2 developer didn’t have time to work on it any more. Luckily, there was a lot of interest from others, and the project was handed over to two guys, Matt and Mike, who co-founded a wonderful new project called WordPress. Haven’t looked back since.