as far as content management system is concern,wordpress is most popular.It is a open source platform for developing content management system.It is compatible with all major browsers.It Easy to install and upgrades 3D Walkthrough Animation .It provides thousands of theme templates.Themes allow user to customize your websites layout very quickly.you can use plugin to add functionality in your sites like social media sharing,SEO and much more.It allow user to create Search Engine Friendly contents.