mattermost.com
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Mattermost: The Open Source Alternative to Slack
A $27M revenue startup betting on self-hosted collaboration for regulated industries
In a world dominated by SaaS giants, Mattermost is quietly building a $27M revenue business by selling the one thing competitors won't: control. For regulated industries where data sovereignty isn't optional, this open-source alternative to Slack isn't just a tool—it's a mission-critical infrastructure.
"Mattermost isn't competing with Slack on features—it's winning where Slack can't go: air-gapped networks, regulated industries, and total data control."
The Regulated Enterprise
With 371,708 monthly visits and 48% coming from organic search, Mattermost's audience isn't the casual startup crowd. The top keywords reveal a technical user base: 'mattermost api' (900 monthly searches) and 'mattermost download' (4,150 searches) suggest developers and IT administrators, not sales teams. The 328,436 backlinks indicate strong technical community engagement, while the 2.9/5 Trustpilot rating (only 8 reviews) suggests they're not chasing consumer satisfaction scores—they're building infrastructure for governments and financial institutions.
The Open Source Moat
Mattermost's 43% direct traffic is unusually high for a B2B SaaS company. This indicates a strong brand recall among technical users who've likely encountered the open-source version. The company's $70M funding against $27.3M revenue suggests they're still in growth mode, but their 175 employees for that revenue shows a lean, engineering-focused operation. They're not spending on marketing—they're building product that sells itself through technical necessity.
The tech stack reveals their priorities: Cloudflare for security, Google Analytics for measurement, and a mix of Tailwind CSS, Bootstrap, and Ant Design for rapid UI development. Notably absent are typical marketing automation tools—this is a product-led company where the product is the marketing. The international traffic distribution (undefined countries dominating) suggests a global, distributed workforce—exactly their target market.
- Open-source core with enterprise features as paid upgrades
- Self-hosted deployment for data sovereignty requirements
- API-first architecture appealing to technical teams
- Focus on regulated industries (government, finance, healthcare)
The Unsexy Billion-Dollar Bet
While others chase AI features, Mattermost wins by being the reliable, compliant backbone for organizations that can't afford to be wrong.
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https://mattermost.com/wp-content/uploads/2025/03/USCommercial_1200x628_V2.png
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Mattermost | Collaboration Platform for Mission Critical Work
Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform.
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Reviews (7)
Libre selfhosted version is good
We use the free version bundled with gitlab. Great when old IRC generation meets young slack generation. Bugfixes are quick, Android app sucks, webapp rocks. Got laptop sticker when I met them at a fair.
Great wee app
Great wee app, lets you run your own little chat server outside control of Facebook or slack. Some fidgity things with plugins, etc but understanding considering the scale of the program/development.
Helpful, easy to use, fast to learn and useful program for internal…
Good and useful program for internal information flow and exchange. Is very useful for us especially in Corona time. Easy to use and super fast to learn. A few more text options would be helpful.
Superb chatting tool to monitor the…
Superb chatting tool to monitor the progress of your web work. We would suggest the same for an instant turnaround :)
I'm extremely disappointed with this…
I'm extremely disappointed with this business solution (cloud version). They abruptly removed a vital feature without offering any viable alternative. This has had a significant negative impact on our workflow, and it feels like they've left us high and dry. It's frustrating when a solution you rely on fails to meet your basic needs and doesn't seem to care about the inconvenience caused. I would caution anyone considering this solution to think twice, as their commitment to customer satisfaction seems questionable at best
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About mattermost.com
Accelerate your mission critical workflow by integrating people, processes, tools and AI infrastructure on a resilient and adaptable platform.
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mattermost.com uses 17 technologies across their website including Wistia, Adobe Fonts, Google Fonts, HSTS, and more.
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Traffic & Audience
mattermost.com receives approximately 371.7K monthly visitors and ranks #120,865 globally. The website has a bounce rate of 43% with visitors viewing an average of 3.0 pages per visit. Users spend an average of 1:24 on the site.
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This page provides publicly available information about mattermost.com. Data is collected from various public sources and may not always be up to date. For the most accurate information, please visit mattermost.com directly at https://mattermost.com.