Open technology · CERN born
Follow
the White Rabbit
A shared sense of time changes what’s possible. White Rabbit brings sub-nanosecond synchronisation to Ethernet—and keeps the technology open for everyone.
< 1 ns
Synchronisation precision
>1000 km
Fibre reach
Open
By design
Industry standard
By industry
One network.
One shared notion of time.
White Rabbit extends Ethernet with precise timing and deterministic data delivery—so distributed systems can act as one.
add here latest events
01 / SYNCHRONISE
Sub-nanosecond precision
Synchronise clocks across a network with exceptionally high accuracy and stability.
02 / DISTRIBUTE
Timing over Ethernet
Carry data and timing together over standard fibre infrastructure, over distances up to 10 km.
03 / BUILD
Open, documented, proven
An open-source technology with a growing ecosystem of tools, implementations and qualified products.
FIND YOUR WAY
Start where you are.
Whether you’re evaluating, building, or advancing the technology, there’s a place for you in the White Rabbit community.
01 / UNDERSTAND
Explore the technology
See how White Rabbit works, where it came from, and the systems it enables.
02 / PARTICIPATE
Join the collaboration
Meet the organisations developing and sustaining the open White Rabbit ecosystem.
03 / DEPLOY
Find qualified products
Explore products and associated labs within the White Rabbit qualification programme.
The technology
One network.
One shared notion of time.
White Rabbit extends Ethernet with precise timing and deterministic data delivery—so distributed systems can act as one.
01 / SYNCHRONISE
Sub-nanosecond precision
Synchronise clocks across a network with exceptionally high accuracy and stability.
02 / DISTRIBUTE
Timing over Ethernet
Carry data and timing together over standard fibre infrastructure, over distances up to 10 km.
03 / BUILD
Open, documented, proven
An open-source technology with a growing ecosystem of tools, implementations and qualified products.
BUILT TOGETHER
From research labs to real-world systems.
Born at CERN and developed with a global community, White Rabbit supports demanding timing applications in science and beyond. The collaboration brings users, developers and industry together to keep the technology moving forward.
A SHARED TIMEBASE
One clock.
Every node.
RESEARCH ↔ INDUSTRY ↔ APPLICATIONS
Members of the collaboration
A network built by its members.
White Rabbit connects research organisations, industry and specialist technology companies around a shared, open timing standard.
- AMS-IX
- CERN
- CESNET
- Creotech Quantum
- DA-Group
- Deutsche Börse Group
- Fraunhofer HHI
- GMV
- GSI Helmholtzzentrum
- INFN
- IQD
- Jump Trading
- Liquid-Markets
- SCK CEN
- Nikhef
- Nu Quantum
- Quincy Data
- Royal Observatory of Belgium
- Safran Electronics & Defense
- SURF
- SyncTechnology
- TechnoSystem Labs
- Université de Franche-Comté / FEMTO-ST
- UNH InterOperability Lab
- VERSE
Keep the conversation going