facebookresearch/faiss

Fast Open-Source Search & Clustering engine × for Vectors & Arbitrary Objects × in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram 🔍

🆕 Find the k-nearest neighbors (k-NN) for your vector data

🛰️ An approximate nearest-neighbor search library for Python and Java with a focus on ease of use, simplicity, and deployability.

Lightweight Nearest Neighbors with Flexible Backends

⚡ Super fast clustering for high-dimensional vectors on CPUs (x86, ARM) and GPUs — for Python and C++. Faster clustering of vector embeddings than FAISS

cuVS - a library for vector search and clustering on the GPU

Nearest Neighbor Search with Neighborhood Graph and Tree for High-dimensional Data

vsag is a vector indexing library used for similarity search.

Elasticsearch plugin for nearest neighbor search. Store vectors and run similarity search using exact and approximate algorithms.