MongooseIM
Customisable enterprise instant messaging server
1.8k stars 440 forks last commit first released
Actively maintained
Last commit 24 Aug 2026.
MongooseIM is an open-source, Erlang-based XMPP server designed for enterprise-scale messaging. It supports multi-tenant deployments, REST and GraphQL Admin APIs, and WebSocket connectivity, along with push integrations for mobile devices.
Key Features
- Massive scalability with clustered nodes and dynamic multi-tenant domains
- Fully open-source XMPP server with no proprietary extensions and standards-based routing
- GraphQL Admin API for managing users, rosters and messages via HTTP or CLI
- REST API and WebSocket/BOSH-based client access for diverse app integrations
- MongoosePUSH for push notifications to iOS and Android
- MongooseICE integration for audio/video workflows
- Rich observability with metrics, instrumentation and compatibility with modern monitoring
- DevOps-friendly deployment with containerization, orchestration and load testing tooling
Use Cases
- Enterprise messaging backend powering mobile and web chat for thousands of users across multiple domains
- Multi-tenant chat platforms for SaaS providers requiring isolated, scalable environments
- Backend for customer-support and frontline worker apps needing reliable delivery and push capabilities
Conclusion
MongooseIM provides a scalable, standards-driven messaging platform designed for large deployments, with flexible management, multi-tenant support, and extensive integrations for modern apps.
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