hyb

emhash. Fast and memory efficient c++ flat hash table/map/set

ktprime. fast prime sieve and hash algorithm

kquiche. C++

gquiche. optimization google quiche

awesome-hpp. A curated list of awesome header-only C++ libraries

awesome-cpp. A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff.

hash-table-shootout. A benchmark of some prominent C/C++ hash table implementations