Rust library implementing xor-filters

Cuckoo Index: A Lightweight Secondary Index Structure

A Bitmap library (think BitArray, BitVector32, or Bit Index, not bmp) written in C# with more functionality than the .NET default.

Efficient TypeScript bitmap indexing library for set operations and bitmasking.

A fast embedded+server columnar database with SQL, vector search, full-text search, and AI-native retrieval. 12 language clients (Rust, TypeScript, Python, PHP, Go, Java, C#, Ruby, Swift, Zig, D, Nim). Written in Rust.

High-performance in-memory bitmap index engine for Rust. Sub-millisecond filtering and sorting for millions of structured documents using Roaring Bitmaps.

Entropy-aware containers for Roaring bitmaps: near-Shannon-H0 space in the dense-irregular regime where Roaring spends a flat 8 KiB, never larger than Roaring, with a faster select. Pure Rust, zero deps, no unsafe.

Bitmap index codec for the numcodecs buffer compression API

Distributed bitmap indexing and querying

A RDBMS with bitmap index support simulation with Java.

记录学习点滴，分享技术干货

Useful operations for bitmap indexes and run-length encoded bitmaps.

High-performance sparse bitset implementation using VEB trees

A network packet analyzer with a SQL query engine, built from scratch in Python — hand-parsed packet headers (IP-checksum verified), columnar storage, trie/hash/bitmap indexes, a ring-buffer capture pipeline, and a binary-protocol TCP server.