A certification standard issued by the Open Source Initiative (OSI) that indicates that the source code of a computer program is made available free of charge to the general public.
To be considered "OSI Certified" a product must meet the following criteria:
* The author or holder of the license of the source code cannot collect royalties on the distribution of the program
* The distributed program must make the source code accessible to the user
* The author must allow modifications and derivations of the work under the program's original name
* No person, group or field of endeavor can be denied access to the program
* The rights attached to the program must not depend on the program's being part of a particular software distribution
* The licensed software cannot place restrictions on other software that is distributed with it.