Similarity Search

FAISSC++

A library for efficient similarity search and clustering of dense vectors, scaling to billions of vectors on a single server.

QdrantRust

A high-performance vector database and search engine written in Rust, designed for AI applications with filtering and payload support.

chromadbRust

Open-source vector database and embedding store for building AI applications with semantic search.

lancedbHTML

An open-source embedded retrieval library for multimodal AI, offering fast vector search, SQL, and full-text search.

GPTCachePython

A semantic cache library for LLM queries that reduces API costs by 10x and boosts response speed by 100x.

USearchC++

A fast, single-file similarity search and clustering engine for vectors and arbitrary objects with multi-language bindings.

flannC++

A C++ library for fast approximate nearest neighbor searches in high-dimensional spaces with automatic algorithm selection.

chromem-goGo

An embeddable vector database for Go with a Chroma-like interface, enabling RAG and semantic search without external dependencies.

nlpGo

A Go library implementing selected machine learning algorithms for natural language processing and semantic analysis.

LSHBOXC++

A C++ toolbox providing multiple locality-sensitive hashing algorithms for large-scale approximate nearest neighbor search, with Python and MATLAB bindings.

simsearchRust

A simple and lightweight fuzzy search engine that works in memory, searching for similar strings.