MongooseIM vs Syphon
A side-by-side comparison of two self-hosted matrix & xmpp options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | MongooseIM | Syphon |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 85 · Excellent | 14 · At risk |
| Category | Matrix & XMPP | Matrix & XMPP |
| License | GPL-2.0 | AGPL-3.0 |
| Language | Erlang | Dart |
| Setup difficulty | Hard | Easy |
| Min. RAM | 1,024 MB | 256 MB |
| Deployment | docker, bare-metal, source | binary, source |
| GitHub stars | ★ 1,760 | ★ 1,059 |
| First released | 2012 | 2020 |
| Replaces | Slack, WhatsApp | WhatsApp, Discord |
What are MongooseIM and Syphon?
MongooseIM
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.
- Built for massive scale
- Clustering and high availability
- GraphQL and REST admin APIs
- Modern XEP support
Syphon
Syphon is a Matrix messaging client that emphasizes privacy and a calm, distraction-free interface, built with Flutter for desktop and mobile. It supports end-to-end encryption out of the box.
- Privacy-first Matrix client
- End-to-end encryption
- Distraction-free design
- Desktop and mobile
MongooseIM vs Syphon: key differences
MongooseIM is written in Erlang, while Syphon is built with Dart. Licensing differs — GPL-2.0 for MongooseIM versus AGPL-3.0 for Syphon. Syphon is the lighter option, starting around 256 MB of RAM against 1,024 MB for MongooseIM. MongooseIM is the more established project (first released 2012), while Syphon arrived in 2020. MongooseIM lists first-class Docker deployment; Syphon does not.
Why pick each one
Choose MongooseIM if…
- Released under the GPL-2.0 license
- First-class Docker support for quick deployment
- Active community (1.8k GitHub stars)
- Written in Erlang
Watch out for
- Complex deployment
- Requires Erlang knowledge to extend
Choose Syphon if…
- Released under the AGPL-3.0 license
- Easy to set up — beginner-friendly
- Active community (1.1k GitHub stars)
- Written in Dart
Frequently asked questions
Is MongooseIM or Syphon better?
Neither is universally better. MongooseIM has the larger community, while Syphon is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are MongooseIM and Syphon free and open-source?
Yes. MongooseIM is licensed under GPL-2.0 and Syphon under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run MongooseIM and Syphon with Docker?
MongooseIM: yes. Syphon: check the project docs for container support.
Which is lighter on resources, MongooseIM or Syphon?
Syphon has the smaller minimum footprint at 256 MB of RAM, compared to about 1,024 MB for MongooseIM. Real-world usage depends on library size, user count, and enabled features.