Slack - A messaging app for teams who see through the Earth!
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
Confluence - Confluence is content collaboration software that changes how modern teams work
Bigtent - BigTent is a web-based organization and communication portal for groups.
Flock - A faster way for your team to communicate
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.