Mattermost

Mattermost builds a collaborative workflow platform tailored for the defense, intelligence, security, and critical infrastructure sectors. Our solution offers secure messaging, file sharing, workflow automation, and project management, running on-premises or in private clouds. With endorsements from the U.S. Department of War and Fortune 500 companies, we enable high-stakes collaboration across diverse environments, ensuring full data control and interoperability with popular tools like Microsoft Teams and Outlook.