Open source does not just mean it is free and you can freely access the source code for modification, it must also be properly distributed:
1. Distribution must be free.
2. The program must include the source code.
3. The license must allow modifications and for them to be distributed under the same terms of the original license.
4. The license must explicitly permit distribution of software built from modified source code.
5. The license must not discriminate against any person or group of persons.
6. No discrimination against fields of endeavor.
7. The rights attached to the program must apply to all to whom the program is redistributed without the need for execution of an additional license by those parties.
8. License must not be specific to a product.
9. License must not restrict other software.
10. License must not be predicaterd on any individual technology or style of interface.
A drop in the ocean 