Say what you like about oracle, they have been a great steward of MySQL.
I'm not so sure everyone will agree with reports of closed source regression tests and source histories[1][2] (I know these stories are old)
[1]: http://techcrunch.com/2012/08/18/oracle-makes-more-moves-to-... [2]: https://news.ycombinator.com/item?id=4400797
