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MongooseIM

Scalable, robust XMPP messaging platform

Matrix & XMPP ★ 1.7k stars Hard setup GPL-2.0

MongooseIM is an enterprise-grade XMPP server written in Erlang, designed for high scalability and reliability. It supports clustering, REST APIs, and modern messaging extensions.

Key features

  • Built for massive scale
  • Clustering and high availability
  • GraphQL and REST admin APIs
  • Modern XEP support

Pros & cons

Strengths

  • Released under the GPL-2.0 license
  • First-class Docker support for quick deployment
  • Active community (1.7k GitHub stars)
  • Written in Erlang

Trade-offs

  • Complex deployment
  • Requires Erlang knowledge to extend

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