Slack vs Mattermost
Side-by-side from the Top 11 ranking of The 11 Best Team Communication Tools. Last verified June 17, 2026.
The short answer
Slack ranks higher on Top 11 (#1 vs #6) for Remote and hybrid teams choosing a messaging and collaboration platform. The best overall tool thanks to its unmatched app integrations and intuitive design.
At a glance
| Slack | Mattermost | |
|---|---|---|
| Top 11 rank | #1 / The 11 Best Team Communication Tools | #6 / The 11 Best Team Communication Tools |
| Score (out of 9.4) | 9.2 | 8 |
| Best for | Teams needing deep app integrations | High-security and self-hosted needs |
| Pricing | $$ ($8 to $15/user/mo) | $$ ($10/user/mo) |
| HQ | San Francisco, USA | Palo Alto, USA |
| Founded | 2009 | 2016 |
Methodology and scoring weights live at /methodology. No vendor pays for placement — see about.