Mattermost

CommunicationPopularMIT36k stars

Secure collaboration for technical teams

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About Mattermost

Secure collaboration for technical teams. Open-source Slack alternative. Deploy Mattermost on your own server with GoPanel.

Alternative to

Slack

Microsoft Teams

Frequently asked questions

How does Mattermost compare to Slack?: Mattermost is an open-source, self-hosted alternative to Slack. It provides channels, direct messages, file sharing, voice/video calls, and integrations. Self-hosting means no message history limits, full data control, and compliance with data residency requirements.
Does Mattermost support voice and video calls?: Yes, Mattermost supports voice and video calling through built-in Calls (WebRTC-based). It also integrates with Zoom, Microsoft Teams, and Webex for meetings. Screen sharing is supported in calls.
Can I migrate from Slack to Mattermost?: Yes, Mattermost provides a Slack import tool that migrates channels, messages, users, and file attachments. The migration preserves message history and threading. Some Slack integrations may need replacement with Mattermost equivalents.
Does Mattermost support compliance and audit features?: Yes, Mattermost provides compliance exports, message retention policies, audit logging, and e-discovery. It supports LDAP/SAML authentication, data residency controls, and meets requirements for HIPAA, GDPR, and FINRA compliance.

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