Commet vs Synapse

A side-by-side comparison of two self-hosted matrix & xmpp options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeatureCommetSynapse
CategoryMatrix & XMPPMatrix & XMPP
LicenseAGPL-3.0AGPL-3.0
LanguageDartPython
Setup difficultyEasyHard
Min. RAM256 MB1,024 MB
Deploymentbinary, sourcedocker, bare-metal
GitHub stars★ 100★ 4,503
First released20222014
ReplacesDiscord, SlackSlack, Discord, WhatsApp

Why pick each one

Choose Commet if…

  • Released under the AGPL-3.0 license
  • Easy to set up — beginner-friendly
  • Written in Dart
  • Tiny footprint — runs in 256 MB RAM
Commet details

Choose Synapse if…

  • Open federated protocol
  • Strong encryption
  • Bridges to other chats
Synapse details

Frequently asked questions

Is Commet or Synapse better?

Neither is universally better. Synapse has the larger community, while Commet is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.

Are Commet and Synapse free and open-source?

Yes. Commet is licensed under AGPL-3.0 and Synapse under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Commet and Synapse with Docker?

Commet: check the project docs for container support. Synapse: yes.

Related comparisons