So, this library for rich applications implements... a grid, a sidebar, tabs, and forms. What's rich about it? Here's rich: https://examples.sencha.com/extjs/6

So, this library for rich applications implements... a grid, a sidebar, tabs, and forms. What's rich about it? Here's rich: https://examples.sencha.com/extjs/6.2.0/examples/kitchensink/#all https://examples.sencha.com/extjs/6.2.0/examples/kitchensink... It's a great indictment of the platform that nothing approaches Sencha(former ExtJS) in the platform itself or in the "rich UI" libraries that keep springing up like mushrooms after the rain.