Mattermost

Mattermost Enterprise Advanced is a mission-critical collaboration and workflow automation platform built for high-stakes, multi-domain secure operations. Designed with Zero Trust principles, it delivers granular access control, sovereign data protection, and secure collaboration across classified, disconnected, and coalition environments. With ABAC, data spillage handling, air-gapped workflows, mobile security, and AI-ready automation, it enables rapid, secure decision-making while maintaining strict control of sensitive data. This makes it ideal for defense, government, and critical mission.