Mattermost
Team Chat · by Mattermost
Open source team messaging and collaboration platform.
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Summary
Open source team messaging and collaboration platform.
Good fit for
Not assessed yet
Poor fit for
None recorded
Pricing
$ as listed by the vendor · each price dated
| Plan | Billed monthly | Billed annually | Free trial |
|---|---|---|---|
| Professional | Pricing on request (contact sales) | – | |
| Enterprise | Pricing on request (contact sales) | – | |
| Enterprise Advanced | Pricing on request (contact sales) | – | |
Professional
Pricing on request
Enterprise
Pricing on request
Enterprise Advanced
Pricing on request
Features
Overall availability, and what each plan includes where we know it.
Capabilities
| Feature | Overall |
|---|---|
| Access permissions | Included |
| API access | Included |
| Audit trail | Included |
| Custom assistants | Included |
| File sharing | Included |
| File uploads | Included |
| Full-text search | Included |
| Multilingual sites | Included |
| Screen sharing | Included |
| Threaded conversations | Included |
| Two-factor authentication | Included |
| Workflow automation | Included |
- Access permissionsIncluded
- API accessIncluded
- Audit trailIncluded
- Custom assistantsIncluded
- File sharingIncluded
- File uploadsIncluded
- Full-text searchIncluded
- Multilingual sitesIncluded
- Screen sharingIncluded
- Threaded conversationsIncluded
- Two-factor authenticationIncluded
- Workflow automationIncluded
Integrations
| Feature | Overall |
|---|---|
| Zapier integration | Not available |
- Zapier integrationNot available
Security and compliance
| Feature | Overall |
|---|---|
| Data not used for training | Included |
| Single sign-on | Included |
- Data not used for trainingIncluded
- Single sign-onIncluded
“Unknown” and “Not recorded” mean we have no data yet, not that the feature is missing.
Reviews of Mattermost
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What users say about Mattermost
Themes from 58 public Hacker News comments that mention Mattermost (Feb 5 to Oct 16). These are people’s opinions, not facts we have verified. Counts are comments, not a survey.
What people like
Easy self-hosting and stable operation
7 commentsCommenters who run Mattermost say the Docker setup is straightforward, and that it has been stable and performant in their use.
“Not at all! Their stack is actually very reasonable and quite easy to setup”
Hacker News · Oct 2(opens in a new tab) “it's been stable and performant so I can't really complain”
Hacker News · Jul 8(opens in a new tab) Slack-like and easy to use
7 commentsSeveral commenters describe Mattermost as a decent Slack-style clone whose mental model is close to Slack, and say it works well.
“Mattermost is 90% of Slack. It’s great. We migrated to it in a couple of hours, full Slack import.”
Hacker News · Mar 7(opens in a new tab) “Mattermost is a decent slack clone that can be self hosted.”
Hacker News · Oct 3(opens in a new tab)
Common complaints
Restrictions on self-hosted version
10 commentsSeveral commenters say Mattermost's open source edition has been limited over time, including message history caps and missing features such as SSO, and they distrust its licensing.
“I think Mattermost lost a lot of instance admins' trust when they recently decided to update the server to limit access to old messages without good reason.”
Hacker News · Feb 5(opens in a new tab) “Mattermost's license statements are confusing and contradictory.”
Hacker News · Feb 5(opens in a new tab) Paid tiers gate key features
7 commentsCommenters note that key features like SSO, calls, and pricing are paywalled or confusing for smaller organizations.
“their pricing is a bit all over the place and targeted for enterprise”
Hacker News · Jul 8(opens in a new tab) “they place a bunch of restrictions on you in regards to calls, last I checked”
Hacker News · Mar 7(opens in a new tab)
Grouped by AI on Oct 30, 2026. Every quote is copied word for word from the linked comment, and a theme needs at least two separate comments.
Alternatives to Mattermost
Other tools in Team Chat with enough data to compare. Listed alphabetically: not a ranking.
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pricing