Boone Gorges

CUNY Academic Commons

Turn your member directories into sophisticated directory filters. Admins can select which profile fields are filterable, and visitors can filter in a slick AJAX interface.
WARNING! This plugin may not scale well! Don’t use without decent object caching. 
WARNING! This plugin is not ready to be used on a production site!

BP Better Directories

Fancy schmancy BuddyPress member directories.

HivePress

HivePress Messages is an extension for <a href="https://wordpress.org/plugins/hivepress/" rel="ugc">HivePress</a> plugin. It allows users to send private messages.
<a href="https://listinghive.hivepress.io/" rel="nofollow ugc">Demo</a> | <a href="https://help.hivepress.io/" rel="nofollow ugc">Docs</a> | <a href="https://community.hivepress.io/" rel="nofollow ugc">Support</a>

BP Better Directories vs HivePress Messages