Mattermost vs Rocket.Chat (2026 comparison)
Mattermost and Rocket.Chat are both team chat apps. Mattermost is best for self-hosted, open-source team messaging (free limited self-hosted edition, Cloud free for up to 10 users; paid Professional from about $10 per user per month, Enterprise quote-based). Rocket.Chat is best for open-source, customisable team chat (free Starter edition (self-hosted, up to 50 users); paid cloud-hosted plans from about $4 per user per month, Enterprise quote-based).
Pricing and features verified against each vendor's published information on 2026-09-03. Sources linked below.
At a glance
| Feature | Mattermost | Rocket.Chat |
|---|---|---|
| Free plan | Yes | Yes |
| Pricing from | Free limited self-hosted edition, Cloud free for up to 10 users; paid Professional from about $10 per user per month, Enterprise quote-based | Free Starter edition (self-hosted, up to 50 users); paid cloud-hosted plans from about $4 per user per month, Enterprise quote-based |
| Best for | self-hosted, open-source team messaging | open-source, customisable team chat |
| Founded | 2016 | 2015 |
| Platforms | Web, iOS, Android, Mac, Windows, Linux | Web, iOS, Android, Mac, Windows, Linux |
Quick verdict
Choose Mattermost for self-hosted, open-source team messaging. Choose Rocket.Chat for open-source, customisable team chat. Both are compared on published information only, so confirm current pricing at each source below.
More options
Sources
FAQ
- Is Mattermost or Rocket.Chat cheaper?
- As published, Mattermost starts at Free limited self-hosted edition, Cloud free for up to 10 users; paid Professional from about $10 per user per month, Enterprise quote-based and Rocket.Chat starts at Free Starter edition (self-hosted, up to 50 users); paid cloud-hosted plans from about $4 per user per month, Enterprise quote-based. Verify current pricing at each vendor.
- Does Mattermost have a free plan?
- Yes, Mattermost has a free plan as of 2026-09-03.