The Mesa project was started in 1993 by Brian Paul, and he's still developing it! Really impressive!
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"I met Intel employees at XDC who were working on a continuous integration system wherein Intel offers a massive Intel GPU farm to Mesa developers free-of-charge for working on the open source driver."
https://drewdevault.com/2019/02/10/Wayland-misconceptions-debunked.html
Companies promoting FOSS!