BuddyPress.org

Those are all WP plugins and not WPMU ones.

I would steer clear of them.

Wishlist claimed to me their plugin works with WPMU/Buddypress. Haven’t tried it yet, but I trust the MU/BP developers did not break the basic registration process.

Also MU/BP is obviously a big potential market for these plugins, so you can kinda expect they make sure they work.