compare
Synapse vs Zulip
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Synapse | Zulip |
|---|---|---|
| Language | Python | Python |
| Licence | AGPL-3.0 | Apache-2.0 |
| Stars | 4.7k | 26k |
| Latest | v1.162.0 | 12.3 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | about 13 days between releases | about 45 days between releases |
| Active contributors | 38 commit authors on the default branch in the last 90 days | 52+ commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace Slack. Alternatives to Slack →
PartialSynapseA Matrix homeserver; teams chat through a client such as Element, and can federate with other servers.
Full replacementZulipConversations split into topics inside each channel, with an importer for Slack exports.
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
Zulip
- 12.32026-09-21Zulip Server 12.3
- 12.22026-08-10Zulip Server 12.2
- 12.12026-06-26Zulip Server 12.1
- 12.02026-04-27Zulip Server 12.0
- 12.0-beta22026-04-26Zulip Server 12.0-beta2pre-release
Synapse
✓ signed The latest release, v1.162.0, carries a signature GitHub verified.
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Zulip
unsigned The latest release, 12.3, carries no signature GitHub could verify.
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