MongooseIM vs Openfire
A side-by-side comparison of two self-hosted matrix & xmpp options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | MongooseIM | Openfire |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 85 · Excellent | 87 · Excellent |
| Category | Matrix & XMPP | Matrix & XMPP |
| License | GPL-2.0 | Apache-2.0 |
| Language | Erlang | Java |
| Setup difficulty | Hard | Medium |
| Min. RAM | 1,024 MB | 512 MB |
| Deployment | docker, bare-metal, source | docker, bare-metal, binary |
| GitHub stars | ★ 1,760 | ★ 3,064 |
| First released | 2012 | 2004 |
| Replaces | Slack, WhatsApp | Slack, Microsoft Teams |
What are MongooseIM and Openfire?
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
Openfire
Openfire is a mature, cross-platform real-time collaboration server that uses the XMPP protocol. It offers a clean web administration console and an extensive plugin ecosystem for chat, presence, and group communication.
- Web-based admin console
- Rich plugin ecosystem
- LDAP and Active Directory integration
- Group chat and presence
MongooseIM vs Openfire: key differences
MongooseIM is written in Erlang, while Openfire is built with Java. Licensing differs — GPL-2.0 for MongooseIM versus Apache-2.0 for Openfire. Openfire is the lighter option, starting around 512 MB of RAM against 1,024 MB for MongooseIM. Openfire is the more established project (first released 2004), while MongooseIM arrived in 2012.
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 Openfire if…
- Easy to administer
- Long track record
Watch out for
- Java memory footprint
- Dated user interface
Frequently asked questions
Is MongooseIM or Openfire better?
Openfire is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider MongooseIM if its specific feature set fits your needs better.
Are MongooseIM and Openfire free and open-source?
Yes. MongooseIM is licensed under GPL-2.0 and Openfire under Apache-2.0. Both can be self-hosted at no software cost.
Can I run MongooseIM and Openfire with Docker?
MongooseIM: yes. Openfire: yes.
Which is lighter on resources, MongooseIM or Openfire?
Openfire has the smaller minimum footprint at 512 MB of RAM, compared to about 1,024 MB for MongooseIM. Real-world usage depends on library size, user count, and enabled features.