WordPress MU(Multiuser) is the multi-user version of WordPress, the popular blog/cms tool. BuddyPress takes this one step further by making a social network of it, providing messaging and other tools with the blog already in place, making each person's blog a member page.
For an example of it in action, check out http://chickspeak.com. It's built using some of the same core code and integrates with bbpress.
From Andy Peatling, creator of BuddyPress
I'm having trouble finding any time to work on BuddyPress so I've decided to hand over what I have to the community for help.
There are three Wordpress MU plugins here, each should be dropped into the "mu-plugins" folder. The "core" plugin should also be used, and is required for all the other plugins to work.
Please note: These plugins are not ready to be used for anything other than further development! You should not use them on your public website. I'm only making them available so that other developers can continue working with them.
Any questions relating to the code, or how it works can be directed to: dev at buddypress dot com
Use Patent Claims
Include Install Instructions
These details are provided for information only. No information here is legal advice and should not be used as such.