Keepvid is a software that you can use for free which will allow you to download videos from the famous video sharing sites like youtube, dailymotion, google, metacafe, break.com, veoh, and many more.

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Keepvid

Keepvid allows you to download flv or flash video files depending on the url you give, the waiting time depends on your broadband speed. And Keepvid will also convert it the media of your desire. You should know that using Keepvid gives you access to copyrighted materials, so I suggest you to use Keepvid with caution.

PS. I can’t access the website of Keepvid, maybe they’re are under going with something, I just don’t know why I can’t access their site. But anyway, Keepvid is a really cool free download software. If you want another choice, you can download videos from megavideo by learning how to download videos from megavideo.