Mattermost vs Rocket.Chat: Complete Comparison (2026)
Updated: March 7, 20268 min read
VS
Quick Comparison
Mattermost
Rocket.Chat
Starting Price
$10/user/mo (cloud)
$7/user/mo (cloud)
Free Plan
Yes
Yes
Users
800K+
25M+
Founded
2015
2015
Rating
4.3/5
4.2/5
Best For
Enterprises needing data sovereignty and self-host...
Teams wanting open-source Slack alternative with s...
Feature-by-Feature Comparison
MattermostRocket.Chat
88Ease of Use86
90Features88
90Value for Money88
81Customer Support79
83Integrations81
84Mobile App82
AI Verdict
Mattermost leads with a ToolScout Score of 86 vs 84 for Rocket.Chat. Mattermost is best suited for Enterprises needing data sovereignty and self-hosting, while Rocket.Chat excels for Teams wanting open-source Slack alternative with self-hosting. Both are strong options in the Team Communication space.
CHOOSE MATTERMOST IF:
Enterprises needing data sovereignty and self-hosting.
CHOOSE ROCKET.CHAT IF:
Teams wanting open-source Slack alternative with self-hosting.
Frequently Asked Questions
Is Mattermost better than Rocket.Chat?
Mattermost scores 86/100 on ToolScout compared to Rocket.Chat's 84/100. However, the best choice depends on your specific needs. Mattermost is best for Enterprises needing data sovereignty and self-hosting. Rocket.Chat is best for Teams wanting open-source Slack alternative with self-hosting.
Does Mattermost have a free plan?
Yes, Mattermost offers a free plan. Paid plans start from $10/user/mo (cloud).
Does Rocket.Chat have a free plan?
Yes, Rocket.Chat offers a free plan. Paid plans start from $7/user/mo (cloud).
Can I migrate from Mattermost to Rocket.Chat?
Migration between Mattermost and Rocket.Chat depends on the specific features you use. Both tools are in the Team Communication category. Check each tool's import/export options for data portability before switching.