ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Pagekite - Bring your localhost servers on-line.
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Gotty - GoTTY is a simple command line tool that turns your CLI tools into web applications.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.