Tornado Web Server is described as 'Tornado is an open source version of the scalable, non-blocking web server. The framework is distinct from most mainstream web server frameworks (and certainly most Python frameworks) because it is non-blocking and reasonably fast' and is an app in the network & admin category. There are more than 25 alternatives to Tornado Web Server for a variety of platforms, including Linux, Windows, Mac, Self-Hosted and BSD apps. The best Tornado Web Server alternative is nginx, which is both free and Open Source. Other great apps like Tornado Web Server are Apache HTTP Server, BunkerWeb, CivetWeb and lighttpd.