Creating a better foundation for the future of communication.
grommunio is a European software company building secure, Linux-based collaboration technology for enterprises, public institutions and service providers — designed for long-term digital independence.
European Open-Source Collaboration Technology from Vienna
Founded in Vienna in 2020, grommunio is a European software company building secure, Linux-based collaboration technology for enterprises, public institutions and service providers.
We develop infrastructure-grade communication software designed for long-term digital independence and flexible operating models for modern IT environments.
We provide innovative and user-friendly open-source collaboration tools that empower teams to communicate and work together seamlessly, openly, transparently, reliably and securely.
Technology sovereignty as a foundation
To enable organizations to operate their communication infrastructure with full control, transparency and technological sovereignty. We believe critical communication systems must remain auditable, interoperable, standards-based and infrastructure-independent.
- Enterprise email infrastructure
- Directory integration
- File collaboration services
- Active Directory & LDAP
- Multi-tenant hosting architectures
- Enterprise authentication systems
What we stand for
grommunio represents a European model of enterprise collaboration — built on open-source principles, designed for compliance-sensitive environments and focused on sustainable digital infrastructure.
- Built in Europe Founded and developed in Vienna, Austria — independently owned and operated.
- Open-source principles Our technology is transparent, auditable and free from proprietary lock-in.
- Compliance-first design Architected for GDPR, ePrivacy and regulated industries from the ground up.
- Full data ownership Customer data stays where organizations choose — on-premises, private cloud or sovereign hosting.
- Open protocols over lock-in Standards-based architecture enables long-term flexibility and interoperability.
- Long-term maintainability Modular, scalable design built for decades of operational stability.
Digital communication is critical infrastructure
Organizations deserve full data ownership, transparent technology, jurisdictional control and long-term operational stability.
Open source is not a feature. It is the foundation of secure digital collaboration.
We are not defined by replacing legacy systems. We are defined by building open and independent communication infrastructure for the future.
Ready to learn more?
Get in touch with our team to discuss how grommunio can support your organization's digital sovereignty goals.