Easy Video Downloader Express chrome
https://chrome.google.com/webstore/detail/easy-video-downloader-exp/dbcpmdpjjlhppmhfkcgbeanaanipdjbk
Easy Youtube Video Downloader Express 7.22
https://addons.mozilla.org/en-US/firefox/addon/easy-youtube-video-download/
Easy Youtube Video Downloader For Opera
https://addons.opera.com/en/extensions/details/easy-youtube-video-downloader-for-opera/?page=2
0
Online youtube downloader
http://www.clipconverter.cc/