OpenLDES
Sirus is a proud voting member of the OpenLDES ecosystem.
In short
OpenLDES makes it possible to share dynamic, continuously updated data at scale using open standards and open-source technology. As a voting member and technical advisor within the OpenLDES ecosystem, Sirus contributes to its technical architecture, roadmap and quality standards, helping organisations put Linked Data Event Streams into practice.
What is OpenLDES ?
OpenLDES is a community that aims to enable semantic and dynamic data sharing at scale. To make this possible, OpenLDES builds and maintains open-source components. These components allow data to be published and shared not as static files, but as living, continuously updated data streams, known as Linked Data Event Streams (LDES).
Instead of repeatedly requesting an entire dataset, organisations can subscribe to changes. New, updated or deleted data is automatically made available in a standardised and reusable format. This makes data collaboration faster, more efficient and future-proof.
OpenLDES originated from the Flemish recovery project Vlaamse Smart Data Space (VSDS) and has since proven its value across a wide range of domains, including environment, water, mobility, nature management and public services.
The technology also aligns with European standards and initiatives such as SEMIC and the Common European Data Spaces, making OpenLDES a key technology for open and interoperable data sharing across sectors and borders.
The software is available under the EUPL licence. It is free to use, further develop and host, while the intellectual property remains with the Flemish Community. Those who want to get started can find the full technical documentation on openldes.org, the source code on GitHub and a practical tutorial with examples.
Sirus within the OpenLDES ecosystem
Sirus is part of the OpenLDES Steering Committee, together with the Department of Environment, Digitaal Vlaanderen, imec, the Agency for Home Affairs, the Agency for Nature and Forests, the Flanders Environment Agency, Aquafin and Movias, among others.
- contribute to the technical architecture of the LDES software components
- help implement new features and optimise existing solutions;
- provide advice on technological choices and best practices;
- act as a sounding board for technical challenges and innovation;
- work closely with the other partners to safeguard the platform's quality, security and scalability.
As a voting member, we also help shape the strategic direction, roadmap and quality standards of the ecosystem. Our goal is to make it easier for organisations to start working with LDES themselves.
Building an open data ecosystem
The OpenLDES ecosystem, including Sirus, is committed to four key principles:
Open-source collaboration
Transparency and inclusivity
Knowledge sharing and innovation
Sustainability and interoperability
Explore OpenLDES
Want to dive deeper into the technology? These resources provide everything you need to learn more about OpenLDES and start working with LDES:
OpenLDES technical documentation
a complete overview of the basic concepts, publishing, consuming and intermediary pipelines
OpenLDES on GitHub
all source code, available under the EUPL licence
OpenLDES on GitHub
all source code, available under the EUPL licence
LDES Server
the reference implementation for publishing event streams, including technical documentation
Linked Data Interactions (LDI)
reusable pipeline components for receiving, transforming and sending Linked Data
LDES specification, based on the W3C TREE hypermedia specification
What can OpenLDES do for your organisation?
As a technical partner within the OpenLDES ecosystem, Sirus helps organisations turn dynamic data sharing into practice. From architecture and integration to advice on standards and scalability, we help you build solutions that make data easier to share, reuse and keep up to date.
Curious how OpenLDES could work within your organisation?
