Caards - Get people to know you.
Higher Logic - Private, secure online communities that stimulate conversation and ignite engagement.
Cindr - Create a beautiful yet simple single page website for free.
Tribe.so - Tribe is a white-label platform, empowering the new generation of online communities.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Discourse - Discourse is an open source discussion platform built for the next decade of the Internet.