Mattermost

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370 reviews
  • 1 profiles
  • 6 categories
Average star rating
4.3
Serving customers since
2016
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Mattermost Reviews

Review Filters
Profile Name
Star Rating
228
111
19
7
5
Victor S.
VS
Victor S.
CEOSmall-Business (50 or fewer emp.)
04/30/2026
Validated Reviewer
Review source: G2 invite
Incentivized Review

Flexible Self-Hosted Control, But UI and Plugin Ecosystem Feel Behind

What I appreciate most about Mattermost is the level of control and flexibility it gives me. Because I run it self-hosted, I can keep everything within my own infrastructure, so performance, privacy, and compliance stay in my hands instead of being tied to a third-party SaaS environment. For engineering teams, that kind of autonomy is a genuine advantage. I also value the developer-friendly workflow. Channels and threads remain easy to follow even when conversations get busy, and integrations tend to behave predictably. With webhooks, slash commands, and custom bots, it’s straightforward to tailor Mattermost to internal workflows rather than forcing the team to fit a rigid tool.
TH
Tammy H.
IT Specialist/Business OwnerSmall-Business (50 or fewer emp.)
04/28/2026
Validated Reviewer
Review source: Organic

Streamlined Team Communication with a Few Notification Hiccups

I like Mattermost for work since it provides a clean interface, making it easy to navigate. The ability to use chat is good and the platform is quick and responsive. The interface is pretty easy to use, with standard menus that simplify finding what I need. Setting it up was fairly simple and straightforward.
Dhyan .
D
Dhyan .
EnginneringSmall-Business (50 or fewer emp.)
04/28/2026
Validated Reviewer
Review source: G2 invite
Incentivized Review

Affordable Open Source Alternative, But Lacks UX Polish

I like that Mattermost is open source. I also value that it's free to use if you set up your own server.

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HQ Location:
Palo Alto, CA

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What is Mattermost?

Mattermost is the leading collaboration platform for mission-critical work. We serve national security, government, and critical infrastructure enterprises, from the U.S. Department of Defense, to global tech giants, to utilities, banks and other vital services. We accelerate out-of-band incident response, DevSecOps workflows, mission operations, and self-sovereign collaboration to bolster the focus, adaptability, and resilience of the world’s most important organizations. Our enterprise software and single-tenant SaaS platforms are built to meet the custom needs of rigorous and complex environments while offering a secure and unrivaled collaboration experience across web, desktop, and mobile with channel-based messaging, file sharing, audio calling, and screen share with integrated tooling, workflow automation, and AI assistance.

Details

Year Founded
2016
Website
mattermost.com