Open-Xchange (OX) is the world's most powerful open-source alternative to proprietary ecosystems. We deploy modular, private, and hyper-extensible workspaces designed for data-sovereign enterprises.
Enterprise Sovereign Workspace
Deploying the world's most extensible open-source collaboration platform
Enterprise-grade communication with multi-touch PGP encryption and seamless threading.
Secure file hosting and sync across all devices with complete ownership of your data nodes.
High-fidelity collaborative editing that works natively in the browser with full version history.
Deeply integrated scheduling for teams with shared resource bookings and external pings.
Advanced one-click encryption for email and files to secure communication with external parties.
Centralized address book architecture for global internal teams and client relationship nodes.
Native-feel synchronization across iOS and Android via ActiveSync and CalDAV/CardDAV.
Extending the platform through a powerful API to build custom internal portal integrations.
Control your communication infrastructure. We build OX environments that keep your institution's data where it belongs: with you.
Unlike proprietary suites, OX gives you freedom to scale your user base without predatory per-seat pricing models.
Engineered in Germany, OX is designed for the world's most stringent privacy laws and data protection mandates.
Built on open standards (IMAP, WebDAV, CardDAV) ensuring total interoperability with your existing tool stack.
Strategic answers for sovereign enterprise leaders
In many aspects, yes. While G-Suite is more feature-dense in consumer-facing tools, OX is built for enterprise stability, data sovereignty, and massive ISP-level scaling.
That's the OX advantage. We can deploy OX to our secure sovereign cloud or your onsite servers. You have complete control over geographic data residency.
Yes. OX natively supports Microsoft ActiveSync, ensuring push-mail and real-time calendar/contact synchronization across all your desktop and mobile clients.