Ultimate Member - The easiest way to create powerful online communities and beautiful user profiles with WordPress.
eXo Platform - Digital workplace solution
WP-Members - WP-Members is a free membership management framework for WordPress that restricts content to...
Basecamp - A simple and elegant project management system.
WooCommerce Memberships - Give members access to restricted content or products, for a fee or for free.
BuddyPress - WordPress social networking in a box.