Crab (https://muricoca.github.io) is a cutting-edge machine learning library designed to simplify the process of implementing complex recommendation algorithms. The platform prioritizes user-friendly interfaces and efficient data handling, making the use of collaborative filtering and recommender systems more accessible for both beginners and experienced data scientists. Crab's focus on modularity allows developers to easily customize and extend its features, facilitating innovative approaches to personalized recommendation tasks in diverse application areas from e-commerce to media streaming services.