MassTube is a freeware program that will download videos and convert them to the format of your choice.

If you're an avid watcher of YouTube, you've probably at least thought of trying to download content to view offline. MassTube is a great tool for that, as it lets you pick your favorite videos and download them to your hard drive in seconds, so you can watch them later on.

The interface in MassTube is pretty simple. Click the 'Add' button to paste YouTube addresses, and if you are currently visiting a YouTube page, it will automatically be pasted in. When you've added all the videos you want, hit download. MassTube also converts all downloaded files from FLV into the format you want. The latest version of MassTube has support for HD videos as well.

As a simple YouTube download manager, MassTube is fine. Speed is obviously limited to your bandwidth and to YouTube itself, and there’s no search functionality embedded into the program. However, the downloading and conversion of files is problem free.

There are lots of options for downloading content from YouTube, and MassTube is a good free choice. However, it's very basic, and would benefit from a built-in search button.