Mattermost vs Rocket.Chat
A side-by-side comparison of Mattermost and Rocket.Chat — pricing, license, deployment, and where each tool wins.
Mattermost
mattermost.com
Open-source alternative to Slack.
Rocket.Chat
rocket.chat
Communications platform that puts data protection first (alternative to Gitter.im and Slack).
| Feature | Mattermost | Rocket.Chat |
|---|---|---|
| Pricing | Free | Free |
| Model | Open-source | Open-source |
| License | MIT | CC-BY-SA-3.0 |
| Deployment | Cloud, Self-hosted | Self-hosted, Cloud |
| Category | Slack alternatives | Communication - Custom Communication Systems |
| Self-hosted | ✓Yes | ✓Yes |
| Free tier | ✓Yes | ✓Yes |
Pick Mattermost if…
- ✓You prefer Mattermost's feature set or ecosystem fit.
Pick Rocket.Chat if…
- ✓Broader tag coverage in our catalog (proxy for feature breadth).