It is created by Google that provides cross-browser compatible applications along with the web components.
It provides both one-way and two-way data binding.
It provides Polymer command line interface for managing the projects from simple components to complicated web applications.
It provides the polyfills (web component specifications) for creating our own customized and reusable elements.
It uses the web component standards for the creation of reusable widgets in web documents and web applications.
It uses Google material design for the development of hybrid mobile application.
It distributes the custom elements across the network and the users can use these elements with the help of HTML Imports.