Mattermost is an open-source collaboration platform designed for enterprises seeking secure, flexible, and self-hosted communication solutions. It offers team messaging, video conferencing, and workflow automation in one environment.

Built for developers and IT teams, Mattermost supports integrations with GitLab, Jenkins, Jira, and other DevOps tools to streamline development workflows.

The platform emphasizes data privacy, allowing organizations to deploy on-premises or in private cloud environments. Its interface supports channels, threads, file sharing, and real-time collaboration while ensuring compliance with security standards like ISO and SOC.