Observed arrival · 2026-09-10

Mattermore: Mattermost with the locked doors opened

mattermore.dev Observed source

Editorial interest 86/100 Selection signal · not a rating of the site

An AGPL build of Mattermost that enables group calls, video, recording, transcription, OIDC single sign-on, and guest accounts on a self-hosted server.

Landing page captured for the 2026-09-10 issue.

Field notes

The project distributes either a complete server image or a separate plugin for an existing Mattermost installation. Its explanation identifies the upstream GroupCallsAllowed check, the MM_CALLS_GROUP_CALLS_ALLOWED environment variable, and a versioning scheme intended to keep upgrades from replacing the bundled plugin. The page also describes an added AGPL OIDC provider and lists integrations including Keycloak, Authentik, Entra, and Cloudflare Access.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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