BuddyPress

<strong>Activity Streams</strong> - Global, personal, and group activity streams with threaded commenting, direct posting, favoriting and @mentions. All with full RSS feeds and email notification support.

<strong>Extended Profiles</strong> - Fully editable profile fields allow you to define the fields users can fill in to describe themselves. Tailor profile fields to suit your audience.

<strong>User Settings</strong> - Give your users complete control over profile and notification settings. Settings are fully integrated into your theme, and can be disabled by the administrator.

<strong>Extensible Groups</strong> - Powerful public, private or hidden groups allow your users to break the discussion down into specific topics. Extend groups with your own custom features using the group extension API.

<strong>Friend Connections</strong> - Let your users make connections so they can track the activity of others, or filter to show only those users they care about the most.

<strong>Private Messaging</strong> - Private messaging will allow your users to talk to each other directly and in private. Not just limited to one-on-one discussions, your users can send messages to multiple recipients.

<strong>Site Tracking</strong> - Track posts and comments in the activity stream, and allow your users to add their own blogs using WordPress' Multisite feature.

<strong>Notifications</strong> - Keep your members up-to-date with relevant activity via toolbar and email notifications.