OpenChain 2.1 is functionally identical to ISO/IEC 5230:2020 and OpenChain 2.0.

This is the International Standard for open source license compliance.

It is simple, effective and suitable for companies of all sizes in all markets.

This standard is openly developed by a vibrant user community and freely available to all.

It is supported by free online self-certification, extensive reference material and official service provider partners.