M

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.

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About Mattermost

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

Industries

Enterprise SoftwareCybersecurity

Company Size

51-200

Company Stage

Grant

Total Funding

$71.4M

Headquarters

Palo Alto, CA

Founded

2016

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What believers are saying

  • October 2026 v12 launches show active shipping across agents, policy, and cross-domain control.
  • Virtru, Cohere, and archTIS partnerships broaden security value for national-security deployments.
  • Japan expansion, new federal hires, and certification programs signal sales and ecosystem scaling.

What critics are saying

  • Defense revenue concentration exposes Mattermost if U.S. and allied procurement slows in 2027.
  • Slack, Teams, and open-source forks commoditize collaboration, squeezing pricing and retention.
  • If AI-governance features disappoint, sovereign-platform positioning loses urgency and strategic relevance.

What makes Mattermost unique

  • Mattermost v12 and Cross Guard target accredited cross-domain workflows in October 2026.
  • Its self-hosted, air-gapped architecture satisfies defense, intelligence, and classified buyers.
  • ABAC, audit trails, and sovereign AI controls differentiate against generic chat platforms.

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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

6 month growth

0%

1 year growth

0%

2 year growth

0%
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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