Approximate Nearest Neighbor Search

WeaviateGo

An open-source, cloud-native vector database that combines semantic search with structured filtering for AI applications.

annoyC++

Approximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to disk

lancedbHTML

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

USearchC++

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

annoy-rbC++

Ruby bindings for Annoy (Approximate Nearest Neighbors Oh Yeah), enabling fast nearest neighbor searches in Ruby applications.

hnswlib.rbC++

Ruby bindings for Hnswlib, enabling approximate nearest-neighbor search via hierarchical navigable small world graphs.