Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Gather Town - Spatial video-chat worlds for work and play
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Nicebreak - Virtual events for your team that they will love
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
HyHyve - Online networking with real-life interactions