OUDEA v0.1
The public specification for decentralized discovery and governed exchange across independent systems. Published under CC BY-ND 4.0.
Read specification →OUDEA v0.1 · Public launch
FREE YOUR DATA
Liberbyte enables the Open, Unified, Data Exchange Architecture of the Internet.
From an open architecture to a public installer and the first live bytEM data index. Discover the architecture and explore the implementation.
“In the era of AI, authoritative data forms the foundation for responsible and trustworthy systems.”— Tero T. Salomaa, Founder Liberbyte
The public launch01 · Architecture 02 · Deployment 03 · Implementation
One architecture. One installer. One live implementation.
bytEM installer
Public installer repository under AGPL-3.0, including Matrix Synapse. See repository instructions for deployment requirements.
View installer →cities.app
The first public bytEM instance and first live data vertical. Explore indexed data sources.
Open index →How the architecture works
Making data interoperable across the Internet.
OUDEA defines a common architecture through which independently governed data entities can be identified, discovered, referenced and exchanged across systems and organisational boundaries — without requiring a central data platform.
INDEXDiscover data entities
REFERENCESConnect related entities
FINDResolve current access
EXCHANGETransfer governed data
When an identifier is not yet known, the normal operational path is Search → Find → Exchange. References enable relationship navigation.
Explore the OUDEA specification →Data indexesLive · Public Cooperation access Cooperation access
Experience a working vertical.
Begin with cities.app. Other domain indexes are available through cooperation rather than unrestricted public access.
cities.app
Explore the first public bytEM index.
Explore cities.app ↗environment.app
Environmental and water-related data services.
legalentities.app
Entity records and interconnected legal-entity data.
Updates
All news →Latest news
2026-09-22OUDEA & bytEM are live
One open architecture. One public installer. One live implementation.
June 2026Liberbyte joins a European AgriFood-AI network advancing data harmonisation, interoperability, and responsible data sharing for One Health.
Liberbyte GmbH is pleased to announce that it has successfully qualified for the EU AgriFood-AI COST Action.
Oct 2025Matrix.org: This week we're welcoming Liberbyte as a Silver member of the Foundation!
Matrix.org: This week we're welcoming Liberbyte as a Silver member of the Foundation! Liberbyte uses Matrix as data exchange layer between organisations to provide transparent and controlled access to global data exchanges and markets.
Our network
Partners & ecosystem
Cooperation
Build with us.
Explore deployment, source-code cooperation, research partnerships and access to additional data indexes.