The option to stream movies for free, albeit ad-supported, has changed the face of online content consumption in the last few years. While Tubi has certainly become the reigning champ with its vast catalog, other services like Plex offer a wide range of content, while Amazon Freevee has also taken a chunk out of the market, though they are being shut down soon. If you are willing to tolerate a return to commercials (you knew they would never go away), ad-supported free streaming services offer some of the best content you will find.