What does HackerNews think of folly?
An open-source C++ library developed and used at Facebook.
Google's https://abseil.io and Facebook's https://github.com/facebook/folly come to mind.
And then of course there's boost [4], but people have very mixed opinions about it.
The reason a lot of developers use the standard library in C++ is because dependency management in C++ such a nightmare that many people writing a library are forced to use the standard if they want any hope of adoption even when far superior options exist. It's literally something people writing C++ libraries will advertise "Dependency free header only library!" because they know without that a lot of developers won't bother using it.
Anyways, I would be interested to know what part of the standard library you find is better than third party options.
[2] https://github.com/facebook/folly