Whaller!

All-in-one voice and text chat for gamers that’s free, secure, and works on both your desktop and phone. Stop paying for TeamSpeak servers and hassling with Skype.

Diaspora is a federated social networking service, designed to be a more privacy-aware alternative to Facebook . Share what you want, with whom you want.

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Basecamp is a web-based project collaboration tool that allows groups of people to share files, meet deadlines, assign tasks, and centralize feedback.

HipChat is an instant messaging service designed for companies and teams. It has persistent chat rooms, one-to-one chat, searchable chat history, file sharing via drag & drop and clipboard, inline image previews, an API, chat over SMS, and more.

Created by the collaboration experts behind MindMeister, the intuitive online app MeisterTask lets you turn your visual brainstorms directly into agile projects, and export your creative ideas as actionable tasks.

HumHub is a free social network software and framework built to give you the tools to make teamwork easy and successful.

Ello is a simple, beautiful, and ad-free social network created by a small group of artists and designers.

eXo Platform is a cloud-ready enterprise portal and user experience platform-as-a-service (UXPaaS) for building and deploying transactional websites, managing web and social content and creating gadgets and dashboards. Built on open standards and open source technologies, eXo Platform has the features and extensibility of a UXP and the cloud architecture to build public and private clouds.