DownloadDuck: Download videos from YouTube, Facebook, Twitter or Instagram

If you want to download and save online videos, there are many video sharing sites that allow you to make permanent copies on your PC, such as http://downloadduck.com/, I always download some awesome music playlists to listen on the go. DownloadDuck.com is extremely easy to use just copy the link of the video or music file you want to download, and paste it into the huge "Paste URL here..." field and you'll be able to download the file instantly. DownloadDuck supports most popular social networks like YouTube, Instagram, Facebook, and Twitter. Just copy the URL and get a permanent copy of a video or music file on your PC or Mac. But there's a backside of the coin. The Terms of Service for YouTube users specifically prohibit downloading the videos in any way. You have to view them from their services, you cannot make permanent copies on your computer. Youtube's Terms of Service (http://www.youtube.com/t/terms) clearly say the following: You shall not download any Content unless you see a “download” or similar link displayed by YouTube on the Service for that Content.