"Twenty years. It's been 20 years since the Open Source Definition (based on the Debian Free Software Guidelines) was published. That definition sought to uphold 10 ideas:
- A license shall not restrict free redistribution
- The source code must be included with the program
- The license must allow for derived works
- The license protects the integrity of the author's source code
- No discrimination against persons or groups
- No discrimination against fields of endeavor
- The rights attached to the program must apply to all to whom the program is redistributed
- License must not be specific to a product
- License must not restrict other software
- License must be technology-neutral
From that original definition, the idea of "free" (as in "freedom," not "price") software was born. In part, because of the Open Source Definition, plenty of game-changing software has been developed."
