Welcome to 4Links
4Links is a UK based engineering company and test equipment manufacturer specialising in spacecraft communications
We are a trusted supplier to global space agencies, aerospace companies, research institutions and mission-critical projects – our technology is utilised worldwide.
Our technical excellence – created for engineers by engineers
4Links provides a comprehensive suite of tools and solutions to support the development, testing, and monitoring of spacecraft data systems. We offer a wide range of high quality and reliable products, including hardware and software solutions along with first-class integration and technical support services.
Our heritage & relevance
Founded in 2000, 4Links has played a key role in shaping modern space communication. Our founder contributed to the development of the European Space Agency’s SpaceWire standard — a spacecraft onboard network technology now used on over 100 satellites worldwide.
As space systems grow in complexity and scale, 4Links remains at the forefront, delivering future-ready tools and solutions that meet the demands of the next-generation. We continue to invest in new technologies, expand our product portfolio and support the adoption of evolving standards.
Our commitment remains the same: to provide high quality, dependable solutions that help our customers to build, test, and achieve their goals with confidence — supporting the success of critical space missions and projects today and into the future.
SpaceWire Solutions
That work for you
We produce high-quality SpaceWire-related test and measurement equipment for ground use. We create fast, reliable board & IP solutions for ground and in-flight service.
Seamless Interplanetary Data Transfer and Exploration
Our products and services
Application Test
Comprehensive application testing including initial board set-up, validating SpaceWire transport and application protocol, and conducting functional and comprehensive application testing.
Application Monitors
Integrated applications to monitor application performance across multiple application sets. Extending from the low-level SpaceWire transport, through Routed SpaceWire to application protocols such as RMAP and CCSDS.
Routers
4Links provides a series of routing products allowing application engineers to gradually grow their SpaceWire test network as more devices come online.
Open Source
4Links believes in the principles of Open Source, allowing for innovation and growth of SpaceWire amongst developers and companies alike.
Software
4Links provides extensive software for our 4Links units. Different platforms and programming languages may be used by application developers.
Cables
A range of ‘off-the-shelf’ cables and custom cable options giving you flexibility in cable length, connector types and even custom connector options.
Our products and services pages are currently being updated to reflect our latest solutions
If you need assistance or can't find what you're looking for, contact us at sales@4links.space — we're here to help
Our downloads area
A comprehensive collection of resources and files available for download.
What we have to say
Insightful articles and blogs
sharing our industry expertise and keeping you up to date with the fast-paced and ever changing space industry, Stay up to date with the latest 4Links news, product updates and analyses.
4Links.Space to Exhibit at Two Leading Space Industry Events This Summer
We’re excited to announce that 4Links will be showcasing our latest innovations at two major space industry events this summer – the UK Space Conference
SpaceWire Patents – Oversampling
As part of its commitment to open platform development, 4Links is no longer enforcing patents GB0319756DO and US7826566. Thus allowing design engineers to make free