JomSocial

JomSocial is a complete social networking platform for Joomla that allows you to build interactive online communities with member profiles, activity streams, private messaging, groups, events, polls, photo galleries, and video sharing.

Visitors can connect with friends, create their own groups, upload media, and participate in community discussions.

The extension integrates with many popular Joomla components, supports Amazon S3 for media storage, includes advanced ACL permissions, custom templates, and can be expanded with additional modules, plugins, and extensions from the JomSocial ecosystem.