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Team Communication Software

Mattermost

Open-source collaboration platform for secure team messaging, workflow playbooks and self-hosted deployments

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About Mattermost

Mattermost is an open-source collaboration platform for organisations that need control over where their data lives. It can be deployed on-premise, in private or public clouds, or in air-gapped environments.

What Mattermost does

  • Secure messaging: team chat across web, mobile and desktop, with archiving and search.
  • Playbooks: checklists and automated triggers placed beside chat, for jobs such as releases and incident response.
  • Integrations: links to developer and service tools including GitHub, Jenkins, Jira and ServiceNow.
  • Retrospectives: editable incident timelines, channel transcripts and configurable metrics.
  • Open APIs and code: full access to the programming interfaces and source code.

Customers and markets

Government and public sector bodies, healthcare and life sciences, and enterprises handling risk and compliance, as well as developer and operations teams.

Key facts

  • Deployment: on-premise, private cloud, public cloud or air-gapped.
  • Model: open-source platform.

Profile written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

What the business tells TrustList

Stability: major incidents
0 incidents measured
Security certifications
ISO 27001 evidence sent
Delivery
SaaS (cloud), On-premise evidence sent

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