Henry Wright

This BuddyPress plugin sends notifications to a collection of members when you use a command to mention them. Supported commands are:
<ul>
<li>@friends</li>
<li>@group</li>
<li>@moderators</li>
<li>@administrators</li>
</ul>

Crowdmentions

This plugin makes it easy to broadcast an @ mention to an exact subset of members.



very useful

Use a command to mention a collection of members on your BuddyPress site.

Pascal Casier

Swiss knife Toolkit for bbPress. Set global options and style your forums.
Swiss knife tweaking and hacking Toolkit for bbPress. Set global options and style your forums.
Current features:
<ul>
<li>Mentions (email someone by using the @username)</li>
<li>Forum and Topic subscription management for keymasters and moderators</li>
</ul>
And also:
<ul>
<li>Close/Protect forums to new topics (only replies on current topics allowed)</li>
<li>Close/Protect profile information so non-logged-in users cannot see them</li>
<li>Use TinyMCE editor for topics and replies to add basic HTML</li>
<li>Remove or change informational messages, descriptions and breadcrumbs</li>
<li>Auto tick the ” Notify me of follow-up replies via email ” when giving a reply</li>
<li>Move the ” Subscribe ” option of a forum to the right, not directly after the breadcrums</li>
<li>Do not grey out closed topics</li>
<li>Inverse the replies order (most recent on top)</li>
<li>Do not show the table with the list of subforums when in a forum</li>
<li>Remove bbPress css stylesheet from all pages except forum pages</li>
<li>Basic System Info (for support personnel)</li>
<li>Translation ready ! https://translate.wordpress.org/projects/wp-plugins/bbp-toolkit</li>
<li>No email sending to blocked users</li>
<li>Add search on all pages</li>
<li>And more … (see changelog)</li>
</ul>
See the screenshots for all what can be done !
Consider also the following plugins:
<ul>
<li>bbP Move Topics</li>
<li>bbP API</li>
</ul>
Special thanks to Robkk for his input in the codex! 
And thanks to Viktor Szépe for his svn-updater idea.

bbPress Toolkit

It is a very usefull plugin, but it has no support!
It has also a bug and it doesn't subscribe new registered users

Usefull but with No support

Swiss knife tweaking and hacking Toolkit for bbPress. Set global options and style your forums.

Crowdmentions vs bbPress Toolkit