Faster.Map — A blazing-fast, memory-efficient HashMap library for .NET. Featuring SIMD-optimized DenseMap, lock-free CMap, and high-performance BlitzMap implementations designed for extreme speed, scalability, and low memory overhead. Ideal for real-time systems, caching engines, and high-density data workloads.

A library for high-performance primitive collections in the JVM/Kotlin ecosystem.

Comparison of Hashing Algorithms - Double Hashing, Robin Hood Hashing Cuckoo Hashing with Java's inbuilt HashMap/ HastSet over million of add(), contains() and remove() operations.

several hash map implementations

STL-like implementation of a hash map with concurrent robin hood hashing

Hash map data structure with string keys

Python hash map that migrates between two-level chaining and Robin Hood probing based on workload. Live metrics dashboard, reproducible workloads, CSV/JSON benchmarks, safe snapshots and repair.

End-to-end toolkit for smart hash maps, CLI, Mission Control (PyQt6) dashboard, Textual TUI, workload analytics, snapshots, and automated benchmarks.

Generic robin hood hashtable

C-oogle is a web search engine in C. It features an async HTTP web crawler with epoll + Robin Hood hash set, a byte-level HTML state-machine parser, mmap-backed inverted index, a BM25/TF-IDF ranker with two-pointer posting-list intersection, and a raw-socket HTTP/1.1 results server.

Blazingly fast hash table implementation in C using open addressing with linear probing and Robin Hood hashing for collision resolution.

Implementation of Double hashing and robin hood hashing