55
Zulip
Chat organised by topic, under Apache-2.0.
Zulip vs Mattermost
Zulip scores 55 on the signals we measured. Mattermost scores 51. Prefer Zulip if you are following the score, then read the licence notes before you migrate.
51
Mattermost
Team chat. Source is AGPL unless you buy a commercial licence.
| Zulip | Mattermost | |
|---|---|---|
| Measured score | 55 | 51 |
| Licence | Apache-2.0 | AGPL-3.0 |
| Stack | Python | TypeScript |
| Docker | Not at usual paths | Not at usual paths |
| Hosted option | Vendor cloud listed | Vendor cloud listed |
| Last push | 2026-10-15 | 2026-10-15 |
| Stars | 26,050 | 39,333 |