SocialEngine - Socialengine PHP: Elevating Your Online Community Experience.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
phpFox - phpFox is a powerful social network platform for niche communities
Wrike - Wrike is a flexible, scalable, and easy-to-use collaborative work management software that helps high-performance teams organize and accomplish their work. Try it now.
BuddyPress - WordPress social networking in a box.
Slack - A messaging app for teams who see through the Earth!