Compare / Synapse vs Rocket.Chat
Synapse vs Rocket.Chat
Pick Synapse plus Element if you are leaving WhatsApp or Telegram (the published messenger stack). Pick Rocket.Chat if you are leaving Slack (workspace chat, huddles, apps).
Facts checked 20 Oct 2026. License, language, and GitHub activity come from the catalog or the project's own repo. "Not in the catalog row" means the public catalog dump does not store that number.
Synapse in the catalog Rocket.Chat in the catalogStart on Railway
How they compare
| Synapse | Rocket.Chat | |
|---|---|---|
| License | AGPL-3.0 (catalog) source | MIT core; ee/ directories are separate (Rocket.Chat LICENSE; not in the catalog row) source |
| Language | Python (catalog) | TypeScript (GitHub; not in the catalog row) |
| GitHub activity | 4,712 stars in the catalog source | Stars not in the catalog row source |
| Self-host | Published as /stacks/matrix-messenger. Synapse + Postgres + Element. | Published as /stacks/rocket-chat. Persist Mongo/uploads. |
| Best for | A personal or community messenger (WhatsApp/Telegram shape). | Slack-shaped workspace chat. |
Self-hosting and resource needs
Synapse is on /stacks/matrix-messenger with Element. Rocket.Chat is /stacks/rocket-chat. Mattermost is the Teams-shaped sibling — /compare/mattermost-vs-rocket-chat. Signal-server is not a self-host product for users. Federation and TURN are real work on the Matrix side.
FAQ
- WhatsApp or Slack?
- WhatsApp/Telegram are Element/Synapse — /replace/whatsapp. Slack is Rocket.Chat — /replace/slack.
- Why not Signal?
- Signal-server is not a self-host product for users. That is the messenger stack FAQ.
- Are these free?
- Synapse is AGPL-3.0. Rocket.Chat's public repo is MIT outside ee/. You pay hosting.
- How do I deploy Synapse?
- Open /stacks/matrix-messenger. Persist Postgres and media. Create one room.
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