1. Glip is fully searchable, real-time group chat & video chat, task management, file sharing and more, in one easy-to-use app. Get started FREE today.

  2. Find local events & things to do near you. Attend meetups, music & film events, concerts, tech conferences, networking events, and more. Event organizers can also promote and share their events.

  3. Matrix is an open standard for decentralized persistent communication over IP.

  4. Airmail is a lightweight and lightning fast mail client for Mac.

  5. A newly open sourced self hosted Slack like alternative for building persistent chat communities

  6. Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

    freemium $12.5 / Monthly (Per user - Business Class)

  7. Librelist is a free as in freedom mailing list site for open source projects

  8. Bizzabo is the world’s fastest growing event tech company. Our holistic Events Cloud empowers marketers and planners to manage, grow and maximize events.

  9. Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

  10. An email address for your group. Discuss. Debate. Organise. All with email.

  11. Where developers come to talk.

  12. ccGenie turns a mountain of emails, attachments, and links into an organized project so that you...