Talking about videos in Internet we should mention YouTube, since it is the most popular site where you can practically find all you want. The problem is that we cannot download them from the site, and although there are many programs to achieve that, there are fewer effective ones. But we introduce MassTube, a really excellent tool.
MassTube can download various files at the same time and at an amazing speed, helping you to have stored the clips you wish into your computer and enjoy them without needing to be connected. It also offers the possibility of codifying them to MPG, MPEG, AVI, MP4, 3GP, and SWF or simply leaves the original FLV extension.
MassTube adds to this functions the option of renaming files before starting their transferences. You can control each task, and once they are finished the program will let you know about that.