Mattermost
$18.00 / month with a 7-day free trial and a $1.00 sign-up fee
Mattermost is the open-source team messaging platform for organizations that need Slack-style collaboration on their own infrastructure.
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What is Mattermost?
Mattermost is an open-source collaboration platform for team messaging, channels, threads, file sharing, and integrations. It's often chosen by security-conscious teams who want communication infrastructure under their control.
Core capabilities
- 💬 Team chat with channels/threads.
- 🔌 Integrations and bot/webhook workflows.
- 🔐 Self-hosted deployment model for privacy/compliance.
Availability
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