Open-source, self-hosted team messaging for security-conscious organizations.
Mattermost is a team communication platform founded in 2015 with a hiltonsoftware Score of 74/100. Mattermost pricing starts at $10/user/mo (cloud)/month with a free plan available. Mattermost serves 800K+ users and competes with Slack, Microsoft Teams, and Discord in the team communication market. Key Mattermost features include Self-hosted deployment, Channels, and DevOps integrations. hiltonsoftware.co rates Mattermost 4.3/5 based on user ratings (40%), feature depth (25%), value for money (20%), market presence (10%), and growth trajectory (5%).
Enterprises needing data sovereignty and self-hosting.
Reviewed by Alex Chen, SaaS & Productivity Analyst. Last updated: March 2026. Pricing verified. Methodology