Mattermost vs Synapse (Matrix Homeserver)
A side-by-side comparison of Mattermost and Synapse (Matrix Homeserver) — stars, license, self-host difficulty, deploy options, and what each replaces.
| Tagline | Open-source, self-hostable Slack alternative for secure team messaging and collaboration | Reference Matrix homeserver powering decentralized, federated team chat |
| Category | Team Chat & Collaboration | Team Chat & Collaboration |
| Replaces | Slack, Microsoft Teams | Slack, Microsoft Teams |
| GitHub stars | 33k | 5k |
| Language | Go | Python |
| License | MIT | AGPL-3.0 |
| Self-host difficulty | 3/5 Moderate | 4/5 Involved |
| Deploy options | One-Click Docker Docker Compose Kubernetes Manual | Docker Docker Compose Kubernetes Manual |
| Managed hosting | ||
| Last updated | 5 days ago | 4 days ago |
| View repo | View repo |
Mattermost
Open-source, self-hostable Slack alternative for secure team messaging and collaboration
Synapse (Matrix Homeserver)
Reference Matrix homeserver powering decentralized, federated team chat