Rocket.Chat vs Mattermost: Which Should You Choose in 2026?
Choosing between Rocket.Chat and Mattermost comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
By Toolradar Team · Last updated April 14, 2026 · Methodology
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Rocket.Chat
Open-source team communication platform
Best for you if:
- 0
- • Rocket.Chat is an open-source team collaboration platform
- • It provides messaging, video calls, and integrations with self-hosting option
Mattermost
Open-source team collaboration platform
Best for you if:
- 0
- • Mattermost is an open-source messaging platform for secure team collaboration
- • It provides channels, threads, and integrations with self-hosting options
| At a Glance |  Rocket.Chat |  Mattermost |
|---|---|---|
Price | Free + Paid | Free + Paid |
Best For | Team Chat | Team Chat |
Rating | — | — |
| Feature | Rocket.Chat | Mattermost |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| Community Rating | No ratings yet | No ratings yet |
| Total Reviews | 0 | 0 |
| Community Upvotes | 0 | 0 |
| Categories | Team ChatVideo Conferencing | Team ChatScreen Sharing |
How Rocket.Chat and Mattermost Compare
Rocket.Chat
Open-source team communication platform
Free tier available
Mattermost
Open-source team collaboration platform
Free tier available
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Rocket.Chat
Want the highest-rated option?
Neither has user reviews yet.
Go with: Rocket.Chat
Value user reviews?
Neither has user reviews yet.
Go with: Rocket.Chat
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Both are team chat tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Rocket.Chat
- 0
- Free tier available
- Our pick for this comparison
Mattermost
The Bottom Line
Rocket.Chat is our pick.
Frequently Asked Questions
Is Rocket.Chat or Mattermost better?
Rocket.Chat is rated high in our evaluation. Both are freemium.
What are Rocket.Chat and Mattermost used for?
Rocket.Chat: Open-source team communication platform. Mattermost: Open-source team collaboration platform.
What does Rocket.Chat cost vs Mattermost?
Rocket.Chat is freemium (free tier + paid plans). Mattermost is freemium (free tier + paid plans). Visit their websites for detailed pricing.