# Gitter |  | **Gitter** is an open-source instant messaging and chat room system for developers and users of GitLab and GitHub repositories. Gitter is provided as software-as-a-service, with a free option providing all basic features and the ability to create a single private chat room, and paid subscription options for individuals and organisations, which allows them to create arbitrary numbers of private chat rooms. | |-|-| | | wikipedia:: [Gitter](https://en.wikipedia.org/wiki/Gitter) |