Communication

AFFiNE is an open-source, all-in-one workspace and an operating system for all the building blocks that assemble your knowledge base and much more -- wiki, knowledge management, presentation and digital assets

BigBlueButton is an open source web conferencing system for online learning, provided together with the meeting room app, Greenlight.

Discourse is the next-generation community forum platform.

EGroupware is a robust collaboration platform that streamlines project management and enhances team communication in a secure environment.

Etherpad is a real-time collaborative editor scalable to thousands of simultaneous real time users.

Jitsi is a fully encrypted, 100% open source video conferencing solution.

Mastodon is free and open-source software for running self-hosted social networking services.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor full-stack framework.

An integrated application that combines Rocket.Chat and Jitsi to make audio & video calling, chatting and conferencing simple and secure.