Mattermost

Mattermost

Secure collaboration platform with customizable workflows

Overview

Mattermost provides a secure, customizable collaboration platform designed for technical teams. It offers real-time messaging, file and code snippet sharing with inline syntax highlighting, and workflow automation, all within a platform that can be fully customized and deployed anywhere to meet strict security and data-control needs. The product integrates with essential developer and IT tools like GitHub, GitLab, and ServiceNow, enabling users to run and automate workflows from a single interface. In addition to an open-source version, Mattermost offers premium features such as built-in identity and access controls, granular admin controls, advanced compliance auditing and reporting, and flexible deployment options. Its goal is to help technical teams collaborate more effectively while maintaining strong security and data governance.

YC Company

About Mattermost

Simplify's Rating
Why Mattermost is rated
B
Rated B on Competitive Edge
Rated B on Growth Potential
Rated B on Differentiation

Industries

Enterprise Software

Cybersecurity

Company Size

51-200

Company Stage

Grant

Total Funding

$71.4M

Headquarters

Palo Alto, California

Founded

2016

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Simplify's Take

What believers are saying

  • Mattermost said hundreds of engineers earned certification by July 22, 2026.
  • Mattermost appointed Adam Enterkin CRO on April 22, 2026, targeting sovereign-market growth.
  • Mattermost is sponsoring Locked Shields 2026 and NATO events, reinforcing defense visibility.

What critics are saying

  • v12.0 drops RHEL 7, RHEL 8, and OpenSearch 1.x in October 2026.
  • Atlassian's Confluence Data Center retirement creates a migration race Mattermost Docs must win by 2029.
  • Microsoft Teams Government, Slack Enterprise Grid, and Atlassian's roadmap commoditize secure collaboration by 2029.

What makes Mattermost unique

  • Mattermost Docs targets Confluence migrations for defense and critical infrastructure, launched March 24, 2026.
  • Virtru ZTDF integration gives Mattermost persistent file encryption inside workflows, announced July 28, 2026.
  • Professional Certification builds operator ecosystem around Mattermost, expanding enterprise deployments since January 2026.

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Funding

Total Funding

$71.4M

Above

Industry Average

Funded Over

4 Rounds

Grant funding comparison data is currently unavailable. We're working to provide this information soon!
Grant Funding Comparison
Coming Soon

Benefits

Fully remote work

Office setup fund

Coworking space stipend

Internet and mobile phone reimbursement

401k

Unlimited vacation

Family & friends days

Async weeks

Health benefits

Global and regional team meetups

Open source Fridays

Community hackathons and events

Growth & Insights and Company News

Headcount

6 month growth

↓ -1%

1 year growth

↑ 0%

2 year growth

↓ -1%
SBIR.gov
Sep 13th, 2026
Awards | SBIR

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Associated Press
Jul 28th, 2026
Mattermost and Virtru partner to deliver zero trust data protection for national security operations

Mattermost, an open-source collaboration platform for defence and mission-critical teams, has partnered with Virtru, a data-centric security firm, to deliver Zero Trust Data Format technology for national security operations. The integration enables organisations to apply cryptographic file protection within Mattermost workflows, supporting the Department of War's Zero Trust Strategy and CMMC requirements. When users upload files in Mattermost, they can classify them and apply handling restrictions. Virtru then wraps the file in a ZTDF-protected container, enabling encryption and policy-based access controls that persist as data moves across environments. The architecture aligns with DoD Zero Trust principles and standards recognised by the intelligence community. The integration is available now and will be demonstrated at Black Hat USA and DoDIIS Worldwide Conference in August 2026.

PR Newswire
Jul 21st, 2026
Mattermost launches professional certification for engineers operating mission-critical systems

Mattermost has launched its Professional Certification programme across Asia Pacific and Japan. The credential is designed for engineers who deploy and operate Mattermost in mission-critical environments, including defence, critical infrastructure, financial services, and enterprise operations. The certification validates technical expertise in managing secure communications infrastructure. Engineers can demonstrate their proficiency in deploying Mattermost's platform across sensitive operational settings where reliability and security are paramount. The programme expands Mattermost's support for organisations requiring robust communications systems. By offering professional credentials, the company aims to strengthen the technical capabilities of teams managing its platform in high-stakes environments across the region.

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