High Trust Messaging for the Enterprise

Mattermost is a flexible, open source messaging platform
that enables secure team collaboration

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Centralize DevOps communication and workflows

Build intuitive workflows and collaborate across large teams without worrying about security or data privacy. Get up and running quickly with hundreds of existing integrations, or build out custom workflows that scale to tens of thousands of concurrent users.

  • Deploy faster by connecting people, files, and systems with workflows
  • Resolve incidents and outages in a trusted, private workspace
  • Integrates securely with most popular DevOps tools (CI/CD, bots, Git)
  • Highly customizable down to the interface—control the experience
collaborate securely

Collaborate securely and privately, enterprise-wide

Many of the world’s leading privacy-conscious enterprises work better with Mattermost by connecting people, tools, and automation to increase collaboration.

  • Deploys to private cloud and on-prem for full control of data
  • Enterprise-grade security, availability, and scalability
  • Works seamlessly with mobile security and compliance systems
Devops diagram

Mattermost enables DevOps workflows

DevOps teams use Mattermost to power collaboration at every stage of the DevOps lifecycle. Mattermost unifies people, tools, data, and automations to help your team increase innovation and agility.

Learn how
Alternative to Slack

Alternative to Slack

Mattermost is an open source Slack alternative. It's written in Golang and React and runs as a single Linux binary with MySQL or PostgreSQL. Use the features you like (file sharing, real-time group chat and webhooks—to name a few) and access the source code.

See Mattermost vs. Slack

Mattermost vs. Microsoft Teams

Mattermost and Microsoft Teams

For engineers, modern collaboration means more than just group chat. While Microsoft Teams can meet the needs of some business users who need a simple chat solution, developers need the power to connect services, proprietary systems, and complex workflows without limiting their autonomy.

See Mattermost and Teams

Migrate from Hipchat

Migrate from Hipchat

Organizations are migrating from Hipchat, IRC and Rocket.Chat to Mattermost. After Slack acquired Hipchat, customers searched for open source alternatives. And Mattermost became the leading choice for on-premises Atlassian customers.

Migrate from Hipchat to Mattermost

Deploy team collaboration at scale

Advanced Permissions

Advanced Permissions

Restrict actions in Mattermost to authorized users only

High Availability

High Availability

Maintain service during outages through the use of clustered infrastructure



Deploy highly efficient database searches in a cluster environment

Privacy-conscious organizations trust Mattermost

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Why Open source

Why open source

Hundreds of contributors around the world help develop Mattermost (we're popular on GitHub). Never get locked in, retain complete control of your infrastructure and avoid surprises altogether.


Explore the docs

Explore the docs

From deployment on your hybrid cloud to end-user and admin guides, learn how to customize Mattermost for your organization.

Over 100 in-depth guides available

See all documentation

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