LightFM

LightFM is an open-source Python library designed for building and analyzing recommendation systems using hybrid matrix factorization models. It is particularly suitable for collaborative and content-based filtering approaches and is widely used in production environments for recommendation tasks, such as those found in e-commerce, content platforms, and personalized user experiences. It is aimed at data scientists, ML engineers, and developers who want a scalable, flexible, and effective way to build recommender systems.