The messaging infrastructure that keeps humans in control.

Built on open standards. Proven at WhatsApp scale. Sovereign by design.

ProcessOne has been powering mission-critical messaging since 1999, for organizations that can't afford to lose control of their communications.

Organizations Builders
2 billion Users served
2M Concurrent connections / node
99.999% Uptime SLA
25+ Years of expertise
5 Open protocols supported
Trusted by

Organizations

Governments, regulated industries, and enterprises that need messaging infrastructure they fully control. On-premise or private cloud. Auditable. Compliant. No dependency on third-party platforms.

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Builders

Companies building products with messaging at their core. ejabberd gives you the most battle-tested XMPP foundation available, the same technology that powered WhatsApp's growth to billions of users.

Build on ejabberd →

AI & Agents

As AI agents enter the workplace, the question of who controls human-machine communication becomes critical. ProcessOne provides the messaging backbone for human-AI collaboration - keeping humans informed, in control, and in the loop.

Coming soon
We don't believe critical infrastructure should be rented from a hyperscaler that can cut you off, built on a startup's platform that may pivot tomorrow, or locked into a protocol designed by a company that can be acquired. We build the alternative.
European company
Sovereign by design
Fully open source
25+ years of uptime

The complete stack.

ejabberd is modular by design. Self-host the open-source edition, run it under a commercial licence, or let us manage it for you. Pair it with Fluux Messenger, your own client, or any XMPP-compatible app. Pick what fits your stack. Swap anything later.

Choose a server

  • ejabberd Community Server Open sourceSelf-hosted
  • ejabberd Business Edition LicensedSelf-hosted
  • Fluux SaaSManaged

Choose a client

  • Fluux Messenger Open source
  • Your own client Mobile, web, IoT, desktop. Any existing XMPP app works, or build your own.

Not sure what to pick? Compare all editions in detail →

25 years of battle-tested
messaging technology.

ejabberd is the open-source messaging server at the heart of everything we build. Developed by ProcessOne since 2002, built on XMPP, an open IETF standard, it has been tested at scales most messaging infrastructure will never reach.

  • XMPP, MQTT, SIP, and Matrix in a single platform
  • 2 million concurrent connections on a single node
  • Actively developed, fully auditable, no vendor lock-in
  • Community Edition free and open-source · Business Edition with LTS and enterprise support

ejabberd is the foundation. What you build on it is yours.

Explore ejabberd →

Latest news from our blog.

All articles →
🚀 ejabberd 26.02

🚀 ejabberd 26.02

We are pleased to announce the bugfix release ejabberd 26.02.

· 2 min read

Ready to own your messaging infrastructure?

Whether you're a government agency, a regulated enterprise, or a team building the next generation of messaging products. We'd like to talk.

Contact us Try ejabberd

ProcessOne, Paris, France