4 ms·AFAIK, AIX, HP-UX, and Mac OS X are not open source (I'm only positive about OS X)by isaacdl 12y agoAFAIK, AIX, HP-UX, and Mac OS X are not open source (I'm only positive about OS X)Alupis 12y agoOSX is largely based on DarwinOS + some lipstick and customization... so it's close-ish to being Open Source... but I see the point.Igglyboo 12y agoOS X is mostly open source, the big thing that isn't is XQuartz IIRC.