Flowdock is a web-based team chat service that integrates with your tools to provide a window into your tea...

Imagine all your team communication in one place, instantly searchable, available wherever you go. That’s S...

Free chat rooms for your public repositories. A bit like IRC only smarter. Chats for private repositories...

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

Mattermost is modern communication from behind your firewall.

Zulip is powerful, open source team chat that combines the immediacy of real-time chat with the productivit...

Keybase is for anyone. Imagine a Slack for the whole world, except end-to-end encrypted across all your dev...

It supports end to end encryption, groups, channels and sharing of files between users, also registration d...