"Open Source" Definition and Criteria##

According to opensource.org, "Open source software is software that can be freely used, changed, and shared (in modified or unmodified form) by anyone. Open source software is made by many people, and distributed under licenses that comply with the Open Source Definition." Such a license, again according to opensource.org, is a license whose distribution terms include and comply with the following criteria:

Much of the OpenAFS software (the portions of the code delivering what makes OpenAFS OpenAFS) is licensed under the IBM Public License. Many other files are covered by other open source licenses including BSD, MIT Kerberos, and Apache. Additional files are in the public domain.

The source code for OpenAFS is available from the OpenAFS GIT repository. Specific version releases of OpenAFS source are also downloadable from the OpenAFS.org website.