Copyright and License

ITK is copyrighted by the Insight Software Consortium, a non-profit alliance of organizations and individuals interested in supporting ITK. The software is distributed as open source under an OSI-approved license. Starting with ITK 4.0, the Apache 2.0 license is used. For versions prior and including 3.20, the new and simplified BSD license is used. Before 3.6, a variation of the BSD license is used. You can find details on the copyright and license for specific versions of ITK below: