head to head · open source
Mattermost vs rememory
Mattermost has 39,097 GitHub stars, 9,006 forks, 1,012 open issues and last shipped yesterday. rememory has 1,452 stars, 79 forks, 20 open issues and last shipped 14 days ago. Mattermost leads on adoption by 2,593% (39,097 vs 1,452 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 | ★ 39K | ★ 1.5K |
| License | Custom / other | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-09-18 | 2026-09-05 |
| Forks | ⑂ 9.0K | ⑂ 79 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Mattermost if
- You weight community size — 39K 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 for teams that need secure chat, workflow automation, voice calling, screen sharing, and AI integration while keeping the deployment under their own control.
read the full Mattermost overview →
About rememory
ReMemory is an Apache 2.0 licensed encryption tool written in Go that seals your files with age encryption, splits the decryption key into separate pieces held by people you trust, and lets a threshold of those people unlock the archive together without any server being involved.
read the full rememory overview →
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Frequently asked questions
Is Mattermost or rememory more popular?
Mattermost has 39,097 GitHub stars and rememory has 1,452. 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 (39,097 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.