Apache HTTP Server is a free, open-source web server software that is widely used to host websites and applications. It is developed and maintained by the Apache Software Foundation and is the most popular web server software in the world. Apache HTTP Server is designed to be fast, secure, and reliable, and supports a wide variety of operating systems, including Linux, Unix, Windows, and macOS. It is highly customizable and provides a range of features that make it suitable for hosting large websites and applications. These features include support for virtual hosting, HTTP/2, SSL, and TLS security protocols, load balancing, and caching. Apache HTTP Server also supports a variety of programming languages and database systems, and provides tools for monitoring performance and diagnosing problems.
Nginx is as configurable as Apache, but Nginx consumes fewer resources.