[jmcqk6]

sqlite is actually public domain. https://sqlite.org/copyright.html. This is also the reason why they are closed contribution.

It's a strange combination in the free software world, but I'm grateful for it.

[ec109685]

They aren’t closed for contribution.

From the author: “They have a really high bar”, but are accepted, occasionally: https://news.ycombinator.com/item?id=34480732

[avinassh]

but they also have this:

> In order to keep SQLite completely free and unencumbered by copyright, the project does not accept patches. If you would like to suggest a change and you include a patch as a proof-of-concept, that would be great. However, please do not be offended if we rewrite your patch from scratch.

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