1. Channels is a simple way to post about, find, and chat about anything quickly and anonymously.

  2. Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more.

  3. Collaba is an easy-to-install, double-click-to-run, server software that provides integrated services such as: e-mail, calendaring, files & documents, assignments, blogs, multimedia chat, forums, bookmarks, web publishing, wiki, single sign-on, LDAP…

  4. EGroupware is free open source groupware software intended for businesses from small to enterprises.

  5. Never miss something awesome

  6. Agorakit is web-based, open source groupware for citizens.

  7. Ticket Tailor is an easy to use event ticketing platform that puts you in control.

  8. Discover groups that are all about the things you love

  9. Xpo-Online is the business platform designed to connect B2B buyers and suppliers around the world. Achieve more with Xpo-Online.

  10. The official Scala Days App handcrafted by 47 Degrees.

  11. Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

  12. All the local tech and startup meetups in one place - easy to organize & attend