CERN Open Hardware Licence

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The CERN Open Hardware Licence (OHL or CERN OHL) is a license used in open-source hardware projects. It was created by CERN, which published version 1.0 in March 2011. Version 1.1 was published in July 2011.[1] Version 1.2[2] was published in September 2013.[3] Version 2.0,[4] which utilizes a simplified language and covers also integrated circuit designs,[5] was published in March 2020.[6]


Contrary to most of license names, the CERN OHL uses the British English spelling licence rather than the American English spelling license which contains an "s".

Projects using the CERN OHL[edit]

The ColorHug2, an open source colorimeter.

On the CERN OHL website they have a list of projects using their license.[7] These projects include:


The CERN OHL is an accepted free content license according to the Free Cultural Works definition[13] and version 2 is approved by the Open Source Initiative.[14]

See also[edit]


  1. ^ CERN launches Open Hardware initiative
  2. ^ CERN Open Hardware Licence 1.2
  3. ^ CERN OHL v1.2 released
  4. ^ CERN Open Hardware Licence version 2
  5. ^ CERN OHL v2 draft presented at FSiC2019
  6. ^ CERN updates its Open Hardware Licence
  7. ^ "Cernohlprojects · Wiki · Projects / CERN Open Hardware Licence".
  8. ^ "AXIOM Alpha".
  9. ^ biere-libre
  10. ^ "colorhug2-hardware/COPYING at master · hughski/colorhug2-hardware · GitHub". 28 August 2016.
  11. ^ "Monero Hardware Wallet revision control". 14 May 2020.
  12. ^ "Mechanical Ventilator Milano".Galbiati, C.; Abba, A.; Agnes, P.; Amaudruz, P.; Arba, M.; Ardellier-Desages, F.; Badia, C.; Batignani, G.; Bellani, G.; Bianchi, G.; Bishop, D. (2020-04-10). "Mechanical Ventilator Milano (MVM): A Novel Mechanical Ventilator Designed for Mass Scale Production in Response to the COVID-19 Pandemic". arXiv:2003.10405 [].
  13. ^ Licenses on "The CERN Open Hardware Licence (CERN OHL) is a license used in open-source hardware projects (OSHW)."
  14. ^ Tim Anderson. "A dedicated licence for open-source hardware: CERN OHL approved by OSI". Retrieved 2021-01-31.

External links[edit]