A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others
Roaring bitmaps in Go (golang), used by InfluxDB, Bleve, DataDog
Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, and StarRocks
An arbitrary size Bit-Vector implementation in JavaScript
A Swift Bits Manipulation/Bitwise Operations Toolkit
Greg's Template Library of useful classes.
Speed-optimized BitSet implementation for modern browsers and JavaScript engines
Build your own Game-Engine based on the Entity Component System concept in Golang.