3 ms·XP. Would love if somebody continued development in open way!by whyagaindavid 9y agoXP. Would love if somebody continued development in open way!avar 9y agoThe Window 2000 source code leaked. Not the same, but pretty damn close.mabynogy 9y agoReactOS is closed to NT: https://www.reactos.org/fr/ https://www.reactos.org/fr/