Element vs Mattermost
Comparing two open source alternatives to Discord and Slack . Use the comparison below to decide which one fits your needs.
Element
AGPL-3.0Open-source Matrix client for secure, decentralized messaging, voice, and video — runs on your own server.
Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Side-by-side comparison
| Element | Mattermost | |
|---|---|---|
| License | AGPL-3.0 | — |
| Self-hostable | Yes | No |
| GitHub Stars | 12,950 | 36,064 |
| Forks | 2,551 | 8,483 |
| Open Issues | 3,653 | 865 |
| Last Commit | Apr 8, 2026 | Apr 4, 2026 |
| First Released | Jul 22, 2015 | Jun 15, 2015 |
| Categories | ||
| Tags | — |
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