Overview
Mattermore is a fork of Mattermost with the paywalled features turned back on: group calls, video, recording, transcription, SSO and guest accounts.
What Mattermore is
Mattermore is a fork of Mattermost that turns the paywalled features back on: group calls, call recording, local transcription, host controls, single sign-on, guest accounts, and no user limit. Group video is written too, and is the one item on that list that has not been run yet.
Mattermore comes in two parts. The server image, ghcr.io/dennisklappe/mattermore,
is our build of Mattermost and carries everything: single sign-on, guest
accounts, no user limit, and the calls features. The calls plugin bundle is
also published on its own and drops onto an existing official Mattermost
server, but it only covers the call features. The user limit is enforced in the
server, so lifting it needs the image. See self-host for the image
and install for the plugin alone. The roadmap says plainly what is
verified working and what is only written.
It is for system administrators who run their own Mattermost and want more than
two people in a call. It keeps the upstream plugin id com.mattermost.calls,
so it is a drop-in replacement for the official Calls plugin and fully
reversible: uninstall it, reinstall official Calls, and you are back where you
started.
What you get
Compared with a stock free (Team Edition or unlicensed) Mattermost server:
| Feature | Free Mattermost | Mattermore |
|---|---|---|
| 1:1 audio calls | Yes | Yes |
| Screen sharing | Yes | Yes |
| Group audio calls in any channel | Needs Professional | Yes |
| Video in direct messages | Yes (experimental) | Yes (experimental) |
| Group video | Needs Professional | Written, not yet browser-tested |
| Recording and transcription | Needs Enterprise | Needs a separate service |
Group video is written: streams are mapped by sender and the participant grid replaces the single remote tile. It has not been run in a browser yet, so it is not a feature we will claim. See video calls for the shape of the change and the roadmap for its status.
How it works
Upstream already ships the switch. GroupCallsAllowed() in
server/enterprise/license.go reads
os.Getenv("MM_CALLS_GROUP_CALLS_ALLOWED") == "true" in every released
version. Mattermore does not invent that variable, it makes the plugin honour
it.
Mattermore versions itself 1000.<upstream>. A Mattermost server upgrade
ships a prepackaged copy of official Calls and installs it if it looks newer.
The high version number means it never does, so your calls plugin survives
server upgrades.
The repo holds patches against a pinned upstream tag, not a diverged branch. Picking up an upstream security fix is a one-line bump of that tag rather than a merge conflict.
Requirements
- Self-hosted Mattermost v11.0 or later.
- System administrator access to the server.
- The ability to set a server environment variable.
Mattermore does not work on Mattermost Cloud. Cloud allows neither plugin uploads nor custom environment variables, so there is no way to install it or to switch group calls on.
Where to go next
- Install, two steps on an existing server.
- Self-host from scratch, a complete Docker Compose stack.
- Migrate from MySQL, moving a Mattermost v10 server on MySQL to the Mattermore image on PostgreSQL.
- Configuration, the environment variable, plugin settings and the ports calls media needs.
- Upgrading, what happens when you upgrade the server or the plugin.
- Troubleshooting, when calls do not connect.
- Licensing and legality, what this does and does not change about your licence position.
- Roadmap, what is done, what is not, and what is being considered.