It's no coincidence DTN is in our name. We're your people for Delay- and Disruption-tolerant Networking.
DTN nodes can store data and forward it when the next connection becomes available, so communication can continue even when there is no continuous end-to-end path.
Disruption stops being a failure and becomes part of the design.





Keep what works. We build DTN around your existing systems and requirements, not the other way around.
We research and develop network architectures, protocols and software, with a focus on DTN and challenged networks. New concepts are prototyped, tested and validated for real-world use.
We design solutions for your specific challenges and integrate them seamlessly into your environment. We can work with your existing stack, use our software, or build the components you need.
We provide expert guidance on DTN and conventional networking, from architecture decisions and system reviews, to optimization and troubleshooting. We also offer ongoing maintenance and dedicated technical support.
When you move from exploring to depending on DTN, we stand behind it – with guarantees, support, and platforms tailored to how you operate.
A maintained, production-ready DTN stack for organizations that want to deploy our established software without a custom development project. D3TN-ES combines stable releases with defined support and SLAs.
For organizations that need DTN tailored to their environment. We design, adapt and integrate the required DTN components into your system and provide hands-on support throughout its operation.
The DARKSOL project explores how containerized workloads can be operated on satellites, landers, space probes and other remote systems where conventional IP networking falls short. As part of the team, we investigate how DTN can bring cloud-native technologies, such as Kubernetes, to these environments.
Learn moreThe MISSION project aimed to combine state-of-the-art space technology with proven computer science techniques to optimize the reliability and effectiveness of future space missions. As an industry partner in MISSION, we contributed practical work on integrating Delay-Tolerant Networking with LoRaWAN. The project work demonstrated store-and-forward communication with µD3TN and interoperability between µD3TN and DTN7 over LoRa links.
Learn moreThe MISSION project was funded by the European Union's Horizon 2020 research and innovation programme.
In this project, we explored how principles from the Recursive Internetwork Architecture (RINA) could be applied to DTN. We developed a recursive DTN approach using Bundle-in-Bundle Encapsulation and validated it in a field test combining terrestrial links with ESA's OPS-SAT satellite.
Learn moreSupported by Germany's Federal Ministry of Education and Research.
We initiated the COLDSUN project to connect underwater sensor networks to the Internet through satellite links. We developed and field-tested a relay buoy that collects and buffers sensor data until a satellite connection becomes available, using open-source software and commercial off-the-shelf hardware.
Learn moreSupported by the European Space Agency.
µD3TN and picoD3TN are our open-source implementations of Bundle Protocol v7, designed for different platforms and resource constraints.
µD3TN is our lightweight Bundle Protocol v6 and v7 implementation in C. It integrates into existing systems over standard sockets and is designed for resource-constrained and challenged networks. Maintained since 2014, it is available to use, inspect and adapt as the foundation for your own DTN system.
picoD3TN brings Bundle Protocol v7 to highly constrained hardware. Written in Rust and compatible with µD3TN, it can run directly on microcontrollers without an underlying operating system while retaining Rust's memory-safety advantages.