Nginx is free and open-source web server software which was based on event-driven architecture and was developed by Nginx Inc. The original author of Nginx is Igor Sysoev. It was primarily written in C programming language. It supports various operating systems such as BSD variants, Windows, IBM AIX, HP-UX, macOS, Linux, Solaris, and few others, etc., Nginx can also be used as a load balancer, HTTP cache, mail proxy or reverse proxy in a server. It was licensed under 2-clause BSD License. Nginx was initially released in the year 2004.