open sourceOpen SourceSelf-host★ 39.5kactive nov 2026
Mattermost
Open-source platform for secure, mission-critical collaboration.
Technical Profile & Specs
verified 2026-11-04
- Cost
- $0 / forever (Open Source)
- License
- Open Source
- Hosting Model
- Self-host (your server)
- Platforms
- webself-hosteddocker to self-host
- Installation
- Clone https://github.com/mattermost/mattermost-server or deploy with Docker Compose
- Operational Setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- Where Your Data Lives
- All application data and configuration live on your own server or local database.
- The Catch / Trade-off
- Requires self-hosting setup, updates, and server maintenance compared to managed Microsoft Teams.
Replaces 1 paid app
up to $19/mo ($228/yr) in subscriptions
Mattermost FAQ
Common questions
Is Mattermost free and open source?+
Mattermost is an open-source tool licensed under Open Source that runs on self-host. Open-source platform for secure, mission-critical collaboration.
What paid software does Mattermost replace?+
Mattermost serves as a free replacement for 1 paid SaaS application: Microsoft Teams, saving up to $19/month ($228/year) in subscription bills.
How do you install and set up Mattermost?+
Installation: Clone https://github.com/mattermost/mattermost-server or deploy with Docker Compose. Setup notes: Deploy via Docker or binary release from GitHub and configure environment variables.
What is the catch or trade-off with Mattermost?+
Requires self-hosting setup, updates, and server maintenance compared to managed Microsoft Teams.