Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
Trakt.tv - Automatically track TV shows & movies you're watching.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
TV Time - TVShow Time is the place to track and watch your favorite TV shows and movies
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
Simkl - Simkl is a TV, anime, and movie tracker that keeps a history of all the shows and movies you watch in one, central location. It’s a mobile app, a website, Google Chrome extension to keep track of everything you watch and integrates with many TV apps