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Home > Open Source Definition

Under the Open Source Definition, licenses must meet ten conditions in order to be considered open source licenses:

1. Free Redistribution: the software can be freely given away or sold.

2. Source Code: the source code must either be included or freely obtainable.

3. Derived Works: redistribution of modifications must be allowed.

4. Integrity of The Author's Source Code: licenses may require that modifications are redistributed only as patches.

5. No Discrimination Against Persons or Groups: no-one can be locked out.

6. No Discrimination Against Fields of Endeavor: commercial users cannot be excluded.

7. Distribution of License: rights must apply to everyone who receives the program.

8. License Must Not Be Specific to a Product: the program cannot be licensed only as part of a larger distribution.

9. License Must Not Restrict Other Software: the license cannot insist that any other software it is distributed with must also be open source.

10. License Must Be Technology-Neutral: no click-wrap licenses or other medium-specific ways of accepting the license must be required.

External link

• The Open Source Definition
• The Open Source Definition by Bruce Perens, Open Sources: Voices from the Open Source Revolution, January 1999, BooksEnthsiast.com

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