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 was published in September 2013.[2][3]. Version 2.0, which utilizes a simplified language and covers also integrated circuit designs,[4] is currently being drafted.[5]


Contrary to most of license names, the CERN OHL uses the British English spelling licence, not the American English spelling license containing 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.[6] These projects include:


The CERN OHL is an accepted free content license according to the Free Cultural Works definition.[11]

See also[edit]


  1. ^ CERN launches Open Hardware initiative
  2. ^ CERN Open Hardware Licence 1.2
  3. ^ CERN OHL v1.2 released
  4. ^ CERN OHL v2 draft presented at FSiC2019
  5. ^ CERN OHL v2 draft
  6. ^
  7. ^ "AXIOM Alpha".
  8. ^ biere-libre
  9. ^
  10. ^ "Monero Hardware Wallet revision control".
  11. ^ Licenses on "The CERN Open Hardware Licence (CERN OHL) is a license used in open-source hardware projects (OSHW)."

External links[edit]