compare
Rocket.Chat vs Synapse
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Rocket.Chat | Synapse |
|---|---|---|
| Language | TypeScript | Python |
| Licence | Other | AGPL-3.0 |
| Stars | 46k | 4.7k |
| Latest | 8.9.0 | v1.162.0 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | too few releases | about 13 days between releases |
| Active contributors | 31+ commit authors on the default branch in the last 90 days | 38 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Microsoft Teams. Alternatives to Microsoft Teams →
PartialRocket.ChatChat and calls on your own server, without the Microsoft 365 integration.
PartialSynapseChat only, through a Matrix client.
Both replace Slack. Alternatives to Slack →
Full replacementRocket.ChatChannels, threads and federation on your own server, with an importer for Slack exports.
PartialSynapseA Matrix homeserver; teams chat through a client such as Element, and can federate with other servers.
Rocket.Chat
- 8.9.02026-10-058.9.0 LTS
- 8.9.0-rc.52026-10-03Node: >=22.22.3 <23 || >=24.15.0 <25pre-release
- 8.9.0-rc.42026-10-01Node: >=22.22.3 <23 || >=24.15.0 <25pre-release
- 8.9.0-rc.32026-09-30Node: >=22.22.3 <23 || >=24.15.0 <25pre-release
- 8.9.0-rc.22026-09-28Node: >=22.22.3 <23 || >=24.15.0 <25pre-release
Synapse
- v1.162.02026-09-29
- v1.162.0rc12026-09-22pre-release
- v1.161.02026-09-15
- v1.161.0rc12026-09-09pre-release
- v1.160.02026-09-02
Rocket.Chat
unsigned The latest release, 8.9.0, carries no signature GitHub could verify.
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Synapse
✓ signed The latest release, v1.162.0, carries a signature GitHub verified.
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