Mattermost vs Mumble
Comparing two open source alternatives to Discord . Use the comparison below to decide which one fits your needs.
Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Mumble
Low-latency, open-source voice chat built for gaming — self-host your own server with no subscription required.
Side-by-side comparison
| Mattermost | Mumble | |
|---|---|---|
| License | — | — |
| Self-hostable | No | Yes |
| GitHub Stars | 36,669 | 7,992 |
| Forks | 8,608 | 1,317 |
| Open Issues | 851 | 490 |
| Last Commit | May 12, 2026 | Apr 30, 2026 |
| First Released | Jun 15, 2015 | Feb 26, 2011 |
| Categories | ||
| Tags | — |
Similar open source alternatives
Zulip
Open-source team chat with a unique topic-based threading model that makes it easy to follow multiple conversations.
Alternative to: 
Slack
Slack
Raven
Simple, open source team messaging platform
Alternative to: 
Discord
Discord
Rocket.Chat
The communications platform that puts data protection first.
Alternative to: 
Skype
Skype
Element
Open-source Matrix client for secure, decentralized messaging, voice, and video — runs on your own server.
Alternative to: Discord
Discord
Discourse
A platform for community discussion. Free, open, simple.
Alternative to: Discord
Discord