Open Source Principles

In preparing this book, I found that the official Open Source Definition was simply too confusing to focus readers on what really matters most about open source licenses. Therefore, I have chosen to rely on a somewhat different set of Open Source Principles to describe software that is open source.

These Open Source Principles are different from but consistent with the official Open Source Definition and with the Free Software Guidelines quoted earlier.

They guide us to what I believe are the key things to look for in open source licenses—and the key things we'll find missing in non–open source licenses.

It will be useful to keep these Open Source Principles in mind as I describe specific open source licenses later in this ...

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