Microsoft Web Framework is described as 'MWF is a system that allows site authors to consider how best to tell the story of Microsoft products and services with confidence that the modular pieces will support and work together' and is an app in the Development category. There are more than 100 alternatives to Microsoft Web Framework for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Mac, Windows and Linux. The best alternative is Bootstrap, which is both free and Open Source. Other great apps like Microsoft Web Framework are Vue.js (Free, Open Source), React (Free, Open Source), AngularJS (Free, Open Source) and Bulma (Free, Open Source).
Polymer is a library that uses the latest web technologies to let you create custom HTML elements. Build anything from a button to a complete application as an encapsulated, reusable element that works across desktop and mobile.