VideoJS is a HTML5 Video Player, recently i started using it in a project i choose it for is supper easy installation which is easy by just adding one video.js file and video-js.css a css file, both are hosted on free CDN. While working on the project i find out that it does not fall back on it own

Extjs is a free and open source javascript library used for building rich internet application. Extjs is compatible with almost all major modern browsers. Extjs can be used with jQuery so there is no need to replace jQuery at the same time you can do almost everything with Extjs too.