Microsoft IIS is described as 'Internet Information Services (IIS) for Windows® Server is a flexible, secure and easy-to-manage Web server for hosting anything on the Web. From media streaming to web application hosting, IIS’s scalable and open architecture is ready to handle the most demanding tasks' and is a Web Server in the development category. There are more than 25 alternatives to Microsoft IIS for a variety of platforms, including Linux, Windows, Mac, BSD and Self-Hosted apps. The best Microsoft IIS alternative is nginx, which is both free and Open Source. Other great apps like Microsoft IIS are Apache HTTP Server, Caddy, Ferron and BunkerWeb.