xVideoServiceThief is a powerful tool that allows you to download videos from very important portals such as YouTube, Dailymotion, Vimeo, Break, Metacafe and Teapotters, among others. The list covers more than 90 sites, including some adult pages such as RedTube and Xvideos.
Not only is it capable of saving Internet videos on your hard drive, but it also works as a format converter so you can watch everything you download without problems. You can also transfer them to your Android device and watch video on the go.