A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others

Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, Alibaba Tair, Redpanda, YDB and StarRocks

Roaring bitmaps in Go (golang), used by InfluxDB, Bleve, DataDog

Go package implementing bitsets

A crate for managing memory bit by bit

A compressed alternative to the Java BitSet class

A better compressed bitset in Rust

M*LIB is a library of generic and type safe containers / data structures in pure C language (C99 / C11) for a wide collection of container (comparable to the C++ STL).

A compressed bitmap class in C++.

Rust FFI wrapper for CRoaring

A library for compact bit sets containing enums.

Project X-Ray Database: XC7 Series

Hierarchical bit set container

Solutions for Cracking the Coding Interview - 6th Edition

Python library for handling efficiently sorted integer sets.

The RAW arbitrary size Bit-Vector implementation in JavaScript

Useful library to handle bytes or bits in Java. Read and write data in a byte array with a custom size for Java types. Read/Write Integer, Long, signed data, String, Hexa String and Date bit to bit

Simple dense bitmap index in Go with binary operators

Bitset data structure

Compressed bitmaps in C#