Mattermost
Open-source team messaging platform
⭐ 4.3/5 (4200 reviews)
About Mattermost
Mattermost is a self-hosted, open-source alternative to Slack with enterprise features and compliance.
Key Features
- Open source
- Self-hosted
- Channels
- Playbooks
- Boards
- Compliance
✅ Pros
- Open source
- Self-hosted
- Data control
- Enterprise features
❌ Cons
- Self-hosting complexity
- Resource heavy
- Smaller ecosystem
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