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.

Deploy Mattermost on-premises, or try it for free in the cloud.

Learn more about the following use cases with Mattermost:

• DevSecOps
• Incident Resolution
• IT Service Desk

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.

• Install Mattermost
• Native mobile and desktop apps
• Get security bulletins
• Get involved
• Learn more
• License
• Get the latest news
• Contributing

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

Other install guides:

• Deploy Mattermost on Docker
• Mattermost Omnibus
• Install Mattermost from Tar
• Ubuntu 20.04 LTS
• Kubernetes
• Helm
• Debian Buster
• RHEL 8
• More server install guides

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

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

• Contribute to Mattermost
• Find "Help Wanted" projects
• Join Developer Discussion on a Mattermost server for contributors
• Get Help With Mattermost

• API options - webhooks, slash commands, drivers, and web service
• See who's using Mattermost
• Browse over 700 Mattermost integrations

See the LICENSE file for license rights and limitations.

• 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).

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