SQLite is in the Public Domain.

http://www.sqlite.org/copyright.html

"… and without additional impediments, was crucial to the Web's existence."

— @timberners_lee

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"CERN's decision to make the Web foundations and protocols available on a royalty free basis, …"

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@tenderlove All of @timberners_lee's original web software was public domain too.

@tenderlove That's awesome! I didn't know that SQLite was public domain.