WhatMoviesStream is an online movie and television guide designed to help viewers discover titles and find where their favorite shows and movies are streaming. The service is available through a Chrome browser extension, which opens as a movable widget and can be enabled, snoozed, or closed from the browser. It offers browsing across thousands of titles, with categories for trending content, new releases, and all-time favorites.

Users can explore movies and shows through advanced search filters, including content type, genre, release year, IMDb rating, and vote count. The guide also lets users watch trailers, share movies, and save titles for later using a favorites feature. For entertainment beyond browsing, WhatMoviesStream includes a movie and television quiz that challenges users to answer up to 20 questions.

The service is free to use and is supported by relevant advertising. WhatMoviesStream presents itself as a convenient discovery tool for people looking for something to watch, bringing search, recommendations, trailers, and saved titles together in a browser-based experience