indexmap-rs/indexmap

A hash table with consistent order and fast iteration; access items by key or sequence index

skarupke/flat_hash_map

A very fast hashtable

bluss/indexmap

A hash table with consistent order and fast iteration; access items by key or sequence index

dbuenzli/hmap

Heterogeneous value maps for OCaml

KevinStern/index-cpp

C++ implementations of indexing mechanisms, including a Hilbert-curve geohash based spatial index…

goossaert/hashmap

Various open addressing hashmap algorithms in C++

haskell-unordered-containers/unordered-containers

Efficient hashing-based container types

incubaid/arakoon

A consistent distributed key-value store