Discourse vs Raven
Comparing two open source alternatives to Discord and Slack . Use the comparison below to decide which one fits your needs.
Side-by-side comparison
 Discourse |  Raven | |
|---|---|---|
| License | GPL-2.0 | AGPL-3.0 |
| Self-hostable | Yes | No |
| GitHub Stars | 46,646 | 671 |
| Forks | 8,857 | 298 |
| Open Issues | 170 | 162 |
| Last Commit | Mar 28, 2026 | Mar 27, 2026 |
| First Released | Jan 12, 2013 | Feb 10, 2023 |
| 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
Rocket.Chat
The communications platform that puts data protection first.
Alternative to: 
Skype
Skype
Mattermost
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Alternative to: 
Discord
Discord