faiss
Faiss is a C++ library by Meta's AI Research team for similarity search and clustering of dense vectors. It supports Python wrappers and utilizes GPU for faster processing, handling billions of vectors. Faiss includes L2, dot product, and cosine similarity algorithms, with indexing structures like HNSW and NSG for efficiency. Compatible with CPU and GPU, it integrates easily with Anaconda, making it essential for managing high-dimensional vector data.