Mattermost is an open source platform for secure collaboration across the entire software development lifecycle. This repo is the primary source for core development on the Mattermost platform; it's written in Go and React and runs as a single Linux binary with MySQL or PostgreSQL. A new compiled version is released under an MIT license every month on the 16th.

Use it for free in Mattermost Cloud or deploy on-premises.

Learn more about the following use cases with Mattermost:

Other useful resources:

• Download and Install Mattermost - Install, setup, and configure your own Mattermost instance.
• Product documentation - Learn how to run a Mattermost instance and take advantage of all the features.
• Developer documentation - Contribute code to Mattermost or build an integration via APIs, Webhooks, slash commands, Apps, and plugins.

Table of contents

Install Mattermost

• Download and Install Mattermost Self-Hosted - Deploy a Mattermost Self-hosted instance in minutes via Docker, Ubuntu, or tar.
• Get started with Mattermost Cloud to use Mattermost instantly.
• Developer machine setup - Follow this guide if you want to write code for Mattermost.

Other install guides:

Native mobile and desktop apps

In addition to the web interface, you can also download Mattermost clients for Android, iOS, Windows PC, macOS, and Linux.

Get security bulletins

Receive notifications of critical security updates. The sophistication of online attackers is perpetually increasing. If you're deploying Mattermost it's highly recommended you subscribe to the Mattermost Security Bulletin mailing list for updates on critical security releases.

Subscribe here

Get involved

Learn more

License

See the LICENSE file for license rights and limitations.

Get the latest news

• Twitter - Follow Mattermost.
• Blog - Get the latest updates from the Mattermost blog.
• Facebook - Follow Mattermost.
• LinkedIn - Follow Mattermost.
• Email - Subscribe to our newsletter (1 or 2 per month).
• Mattermost - Join the ~contributors channel on the Mattermost Community Server.
• IRC - Join the #matterbridge channel on Freenode (thanks to matterircd).

Contributing

Please see CONTRIBUTING.md. Join the Mattermost Contributors server to join community discussions about contributions, development, and more.