A complete, fully tested and documented data structure library written in pure JavaScript.

Easy to use, modular, header only, macro based, generic and type-safe Data Structures in C

Modern C++ B-tree containers

Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.

Swift Collection Data Structures Library

Generic algorithms and data structures for Lazarus/Free Pascal

Faster.Map is a high-performance, thread-safe key-value store designed to outperform the standard Dictionary and ConcurrentDictionary

A collection of Data Structures implemented in Swift.

A single header library for managing game entity hierarchies.

Go-Multimap is an implementation of the `multimap` data structure in Go.

A map in which more than one value may be stored under each key.

Arduino library for fast non-linear mapping or interpolation of values

Curated Multimaps and Rules for Rspamd

Various containers written for C programmers who need complete control over their memory.

Efficient, fully tested, mutable data collections for JavaScript

c++ associative containers based on the XOR scapegoat tree

Concurrent Map

Multimap

Provides robust map collections for C# with high compatibility with core collection interfaces. Mirrored from GitLab.

A flat HashMap that supports multiple entries per key