ਐਨਡਰੋਇਡ ਐਡ-ਆਨ

This add-on is a downloader that lets you easily download videos from sites like Youtube, Facebook, Metacafe, Dailymotion, Break, VKontakte and music for example from SoundCloud, Grooveshark and from many other sites...

UnPlug is an extension which lets you save video and audio which is embedded on a webpage - it's a video download tool.