Product Quantization Python Packages

annlite

⚡ A fast embedded library for approximate nearest neighbor search

nanopq

Pure python implementation of product quantization for nearest neighbor search

vinkra

A lightweight vector database with incremental inserts, automatic exact-to-ANN switching, and explicit storage management. Add vectors anytime without rebuilding the index

rii

Fast and memory-efficient ANN with a subset-search functionality

spheni

Lightweight Vector Search Library focused on Memory Efficiency

fast-pq

Approximate Nearest Neighbors in Python.

lopq

Training of Locally Optimized Product Quantization (LOPQ) models for approximate nearest neighbor search of high dimensional data in Python and Spark.

vink

Vector Incremental Nano Kit — a lightweight vector database with incremental inserts, automatic exact-to-ANN switching, and explicit storage management. Add vectors anytime without rebuilding the index