Mattermost
Self-hosted Slack alternative for secure team collaboration
Mattermost is the open-core collaboration platform for secure team communication. With 31K+ GitHub stars, it combines chat, workflow automation, voice calling, and AI integration in a self-hosted solution. The choice for organizations that need Slack-like features with complete data control.
Why Mattermost?
Slack stores your team's conversations on their servers. For defense contractors, healthcare organizations, and regulated industries, this isn't an option. You need the collaboration features your team expects—chat, video calls, integrations—but with complete data sovereignty and compliance control.
How It Works
Mattermost provides a single Linux binary that deploys anywhere. Get real-time messaging, file sharing, voice and video calls, and workflow automation. Connect to 700+ integrations through the marketplace. Run on-premises or in your private cloud with full control over data retention and access.
What Is Mattermost?
Mattermost is an open-source collaboration platform. It provides team messaging, voice and video calls, screen sharing, workflow automation, and AI-powered features. Self-host for complete data control or use managed cloud hosting.
Key Benefits
Why teams choose Mattermost
Self-Hosted
Deploy on your infrastructure. Complete data ownership and sovereignty.
Slack-Like Experience
Familiar interface with channels, threads, and reactions.
Voice & Video
Built-in calling and screen sharing. No external tools needed.
DevSecOps Ready
Built for development teams with incident management workflows.
700+ Integrations
Connect to your existing tools through the marketplace.
Enterprise Security
SSO, SAML, compliance features for regulated industries.
Features
Everything you need to build with Mattermost
Real-Time Chat
Channels, direct messages, and threaded conversations.
Voice & Video Calls
Start calls with one click. Screen sharing included.
Playbooks
Codify incident response and repeatable processes.
Boards
Kanban boards for project and task management.
Mobile Apps
Native iOS and Android apps with push notifications.
AI Integration
Built-in AI features for productivity.
Use Cases
What you can build with Mattermost
Technology Stack
Ready to deploy Mattermost?
Get started in minutes. Deploy on your own infrastructure at actual cloud cost. No markup, no vendor lock-in.