head to head · open source
Mattermost vs rememory
Mattermost has 39,510 GitHub stars, 9,087 forks, 1,012 open issues and last shipped yesterday. rememory has 1,491 stars, 78 forks, 20 open issues and last shipped 3 days ago. Mattermost leads on adoption by 2,550% (39,510 vs 1,491 stars). Mattermost is written in TypeScript under a custom or non-standard licence; rememory is written in Go under Apache-2.0. Mattermost has attracted 23% as many forks as stars, rememory 5%. Mattermost was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Mattermost | rememory | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 1.5K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 9.1K | ⑂ 78 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mattermost if
- You weight community size — 40K stars and counting
- You want the Custom / other license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick rememory if
- You want the rememory feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and rememory fits your workflow better
About Mattermost
Mattermost is an open core, self hosted collaboration platform that offers chat, workflow automation, voice calling, screen sharing, and AI integration. This repo is the primary source for core development on the Mattermost platform; it's written in Go and React, runs as a single Linux binary, and relies on PostgreSQL. A new compiled version is released under an MIT license every month on the 16th. Deploy Mattermost on premises, or try it for free in the cloud. Learn more about the following use cases with Mattermost: DevSecOps Incident Resolution IT Service Desk Other useful resources: Download and Install…
read the full Mattermost overview →
About rememory
🧠 ReMemory A digital safe with multiple keys, held by people you trust. ReMemory protects your files and divides the key among people you choose. You decide how many must come together to open it. Each person gets a self contained recovery tool that works offline, in any browser. Time locked archives need a brief internet connection at recovery time. Recovery works without this project Each person receives a bundle containing recover.html — a browser based recovery tool. No servers. No dependencies. No need for this project to exist when recovery happens. Download demo bundles to try the recovery process…
read the full rememory overview →
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Frequently asked questions
Is Mattermost or rememory more popular?
Mattermost has 39,510 GitHub stars and rememory has 1,491. Mattermost has the larger community by that measure.
Are Mattermost and rememory free?
Both are open source. Mattermost has no licence declared in this registry, and rememory is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Mattermost and rememory?
Mattermost is written in TypeScript and rememory in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Mattermost or rememory?
Choose Mattermost if you want the larger community (39,510 stars) or its Custom / other licence terms. Choose rememory if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.