ASP.NET is described as 'Asp.net is an open source server-side Web application framework designed for Web development to produce dynamic Web pages, web sites, apps and services with HTML, CSS and JavaScript. You can also create Web APIs, mobile sites, use real-time technologies like Web Sockets and more!' and is a Web Framework in the development category. There are more than 50 alternatives to ASP.NET for a variety of platforms, including Windows, Linux, Mac, BSD and Self-Hosted apps. The best ASP.NET alternative is Python, which is both free and Open Source. Other great apps like ASP.NET are Node.js, PHP, Ruby and Perl.