1)   Videovac 1.1 b8
Videovac is a multi-thread program to help you to download the video from You Tube to your PC and convert it for playback on the device you have selected - PC, iPod, Cell Phone. There are no complicated settings to worry about.

 2)   VideoCacheView Pro 2.0
After watching a video in a Web site (Youtube, rutube and much more), you may want to save the video file into your local disk for playing it offline in the future.