The main BuddyPress Forum component is bbPress. This is a core piece of software created by the creators of WordPress and it is pretty much fully integrated into WordPress and BuddyPress. With bbPress you can create two types of forum in a BuddyPress context – Site-wide forums and Group Forums. Site-wide forums have to be setup by the site admin whilst group forums are optional aspects of groups that are enabled by the group creator.
BuddyPress Activity Filter is a useful plugin that allows you to customise the the way the BuddyPress activity feed works. It allows site admins to limit which filters are available on the activity page, limit which activity filters are available on the main site-wide activity page and customise the activity updates for each post type.
BuddyPress Registration Groups is a plugin that adds a list of groups to the registration form so that new members can be introduced and join your groups. It means they don’t need to go looking for them to be instantly tied in to their preferred groups. Adding this kind or form to your registration can help you to build a profile for each new member.
This plugin is for admin who host BuddyPress Docs directories with significant numbers of docs in search of an alternative default sort order for the documents directory pages. By default BuddyPress Docs sorts in order to the last document edited. This simple plugin allows for this sort order to be changed, and for the number of documents per page to be increased.