# Mercure

Protocol for pushing data updates to web browsers and other HTTP clients over server-sent events, with a reference hub server written in Go.


Source: https://findsoftware.frbit.cloud/mercure/
Last reviewed: 2026-11-03
Listed since: 2026-11-03

## Record

### Links

- home: https://mercure.rocks
- repository: https://github.com/dunglas/mercure
- docs: https://mercure.rocks/docs

### Identity

- status: active
- maintainer: Les-Tilleuls.coop
- maintainerType: individual
- parent: unknown
- firstRelease: 2018
- hqCountry: FR

### Kind

- category: backend
- hosting: binary
- language: go
- runtime: binary
- runtimeMin: unknown
- basedOn: caddy

### Content

- contentStore: unknown
- databases: unknown
- adminUi: unknown
- headlessApi: unknown
- templating: unknown
- i18n: unknown

### Rendering and deploy

- runsAs: always-on
- renderingModes: unknown
- installMethod: Docker image dunglas/mercure

### License

- licenseModel: open-core
- license: AGPL-3.0, commercial license for Mercure Enterprise

### Releases

- currentMajor: 1
- latestReleaseDate: 2026-10-25

### Adoption

- githubStargazers: 5357
- packagistDownloads: not applicable
- npmWeeklyDownloads: not applicable
- contributors: 104
- pluginCount: unknown
- packagistMonthlyDownloads: unknown
- ecosystemsMonthlyDownloads: unknown
- httpArchiveSites: unknown
- wordpressActiveInstalls: unknown
- dependentRepos: unknown
- dependentPackages: unknown

### Sources

- urls: https://mercure.rocks/ (read 2026-11-03)
- urls: https://mercure.rocks/docs (read 2026-11-03)
- urls: https://github.com/dunglas/mercure (read 2026-11-03)
- maintainer: https://mercure.rocks/ (read 2026-11-03)
- hqCountry: https://les-tilleuls.coop/en/ (read 2026-11-03)
- category: https://github.com/dunglas/mercure/blob/main/README.md (read 2026-11-03)
- license: https://mercure.rocks/docs/hub/license (read 2026-11-03)
- license: https://mercure.rocks/docs/hub/license (read 2026-11-03)
- licenseModel: https://mercure.rocks/pricing (read 2026-11-03)
- language: https://github.com/dunglas/mercure (read 2026-11-03)
- runtime: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- installMethod: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- basedOn: https://mercure.rocks/docs/hub/install (read 2026-11-03)
- currentMajor: https://github.com/dunglas/mercure/releases/tag/v1.1.5 (read 2026-11-03)
- latestReleaseDate: https://github.com/dunglas/mercure/releases/tag/v1.1.5 (read 2026-11-03)
- firstRelease: https://github.com/dunglas/mercure/releases/tag/v0.1.0 (read 2026-11-03)
- githubStargazers: https://github.com/dunglas/mercure (read 2026-11-03)
- contributors: https://github.com/dunglas/mercure (read 2026-11-03)
- runsAs: https://mercure.rocks/docs/production/rolling-updates (read 2026-11-03)

## Notes

Mercure is a protocol for pushing updates from a server to browsers and other HTTP clients, and its reference hub is a server that implements it. The hub is a custom build of the [Caddy](https://mercure.rocks/docs/hub/install) web server with the Mercure module. The project publishes a Docker image, a Compose file, a Helm chart and prebuilt archives, and a Go library is available for applications written in Go.

## Worth knowing

The [license page](https://mercure.rocks/docs/hub/license) states AGPL-3.0 for the hub and offers a commercial license through Mercure Enterprise. The paid tiers add multi-node clustering and the Redis and PostgreSQL transports, and the hosted Mercure Cloud runs its servers in Amsterdam.

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Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attributes are recorded, never scored; absent means unknown.
Credit, in full: FindSoftware, CC BY 4.0