BuddyPress.org

I made a little plugin that allows you to have different BP on each domain, but there are limitations.

As jjj said, there is always one user base and plugin just adds different BP components on each site (like activities that user take, groups, messages..).

I’m not using forum so I’m not sure if this plugin would made different forum instances.

My plugin is basically making copies of tables for each site, e.g.

for friends table which is “wp_bp_friends”, plugin makes copies like:

wp_bp_1_friends (for site with id 1)

wp_bp_2_friends (for site with id 2)