Converse.js vs Mattermost
Both Converse.js and Mattermost are self-hosted alternatives to Discord and Telegram.
Side by side
| Field | Converse.js | Mattermost |
|---|---|---|
| Description | XMPP chat client in your browser. | Platform for secure collaboration across the entire software development lifecycle, can be integrated with Gitlab. |
| GitHub stars | 3,302 | 39,499 |
| License | MPL-2.0 | ⊘ Proprietary |
| Platforms | Javascript | Go, Docker, K8S |
| Latest release | v14.0.1, 17 October 2026 | v11.7.15-rc1, 28 October 2026 |
| Repository activity | 1 November 2026 | 2 November 2026 |
| Health | Active | Active |
| Categories | Communication - XMPP - Web Clients | Communication - Custom Communication Systems |
| Website | https://conversejs.org/ | https://mattermost.com/ |
| Source code | https://github.com/conversejs/converse.js | https://github.com/mattermost/mattermost |
Where the records differ
Computed from the two records above: a line appears only where the dataset states a figure, a date or a set relation, and no line recommends one application over the other.
- Mattermost has more GitHub stars in the dataset, 39,499 against 3,302.
- Mattermost recorded repository activity more recently, 2 November 2026 against 1 November 2026.
- Mattermost has the newer release on record: v11.7.15-rc1, 28 October 2026, against v14.0.1, 17 October 2026.
- Licenses differ: Converse.js is listed under MPL-2.0; Mattermost under ⊘ Proprietary.
- Platforms differ: Converse.js lists Javascript; Mattermost lists Go, Docker, K8S.
- Converse.js is filed under Communication - XMPP - Web Clients; Mattermost is filed under Communication - Custom Communication Systems.