Aurelia is a next gen JS client framework that leverages simple conventions to empower your creativity. Built for modern browsers, it enables a forward-thinking, elegant approach to development.
Looking for a framework that supports legacy browsers? Check out DurandalJS. It's built on jQuery, Knockout and RequireJS and offers broad browser support for SPA app development.
A small, yet powerful framework designed for WPF, Silverlight, Windows Phone and Xamarin, Caliburn.Micro makes developing maintainable, extensible and testable applications a breeze. Please, have a read through the introduction.
RPGWithMe provides character sheets, campaign management, play-by-post and virtual tabletop technology for RPGs on tablets, desktops and the web.