Arrow left and right: switch to the adjacent tool in the overview. Arrow up and down scroll the page.

mattermost.com

mattermost.com

Secure collaboration platform for mission-critical infrastructures

Visit Website
Hearts Heat (0–100)
37,650 Stars NOASSERTION v11.7.3 Jun 13, 2026 Since Jun 2015 917 open issues

AI Summary

Mattermost is a secure collaboration and workflow platform that can be operated on your own infrastructure. It is designed for governments, military, energy providers, and organizations with the strictest security, privacy, and compliance requirements. The platform offers team chat, playbooks, DevSecOps integration, and can also be deployed in air-gapped environments.

Pros

  • + Complete data control through self-hosting and on-premise deployment
  • + GDPR-compliant, suitable for air-gapped networks and strictly regulated industries
  • + Extensive integration capabilities with existing tools and systems

Cons

  • Own infrastructure and technical expertise required for operation
  • Higher administrative overhead compared to cloud-only SaaS solutions

Use Cases

  • Security Operations and Incident Response with integrated workflows
  • DevSecOps collaboration in highly secure development environments
  • Crisis management and out-of-band communication during system outages
  • Command & Control for military and government operations

Who is it for?

Ideal for governments, military, critical infrastructures, energy providers, and organizations with the highest security and compliance requirements.

Tags

What is mattermost.com?

Mattermost is a collaboration platform that runs entirely on your own infrastructure. It is built for environments where data sovereignty is not optional but mandatory: government agencies, military, energy providers and companies in heavily regulated industries. The platform combines team messaging with structured workflows and DevSecOps integrations. One notable feature is support for air-gapped networks, meaning environments with no internet connection where cloud services are simply not an option.

Core features

  • Team chat and channels for structured communication within projects and operational teams
  • Playbooks for repeatable workflows, such as incident response or crisis management
  • DevSecOps integration for connecting existing security and development tools
  • Out-of-band communication as a separate channel during system outages or active incidents
  • Air-gapped deployment for networks that are physically isolated from the internet
  • GDPR-compliant data storage through full self-hosting with no external dependencies

Who is mattermost.com for?

Mattermost targets teams for which an external cloud provider is ruled out, whether for legal, security policy or operational reasons. Security operations teams use Playbooks to standardize incident response processes. DevSecOps teams in controlled environments benefit from the integration options with existing tools. Anyone managing a small team without compliance requirements will find the operational overhead hard to justify. Without experience in server administration or container orchestration, even the initial setup can become a project in itself.

Context & alternatives

Mattermost belongs to the category of self-hosted team communication platforms. The most direct comparison is Slack, which is available only as a cloud service and therefore not viable for air-gapped environments. Rocket.Chat follows a similar self-hosting approach and also targets data-sensitive organizations. Microsoft Teams can be operated on-premise but creates a strong dependency on the Microsoft ecosystem. Mattermost stands apart through its explicit focus on government and military use cases, reflected in Playbooks and documented support for classified networks. For anyone looking for a platform built specifically for these conditions, it is one of the few options that supports this kind of deployment at all.

Related Tools

Related Blog Posts

Meooow! Want tool tips by email?

Yes, please!