"Highest" I don't know, but "code whose quality I look up to", then: For C: Process Hacker and some similar code that is designed like and written around Windo

"Highest" I don't know, but "code whose quality I look up to", then: For C: Process Hacker and some similar code that is designed like and written around Windows kernel APIs: https://github.com/processhacker/processhacker/blob/master/phlib/basesup.c https://github.com/processhacker/processhacker/blob/master/p... For C++: Some of the Boost code, and stuff like it, such as P-Stade Oven: https://github.com/himura/p-stade/blob/master/pstade/pstade/oven/detail/concat_iterator.hpp https://github.com/himura/p-stade/blob/master/pstade/pstade/... For others: (need to look later, I forget)