I think boost.org is the first place to stop. Boost is often used as a proving ground for future standard libs. The guideline support lib [0] is also another to

I think boost.org is the first place to stop. Boost is often used as a proving ground for future standard libs. The guideline support lib [0] is also another tool. ACE [1] is also another (older) framework that adds a lot. I try and avoid ACE, despite having contributed, there may still be value add, depending on your need. I've also seen interesting things from Abseil and Folly. [0] https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines [1]https://www.dre.vanderbilt.edu/~schmidt/ACE.html https://www.dre.vanderbilt.edu/~schmidt/ACE.html