Apache is an open-source web server software. A web server is used to host websites and deliver web pages to web browsers. Apache is one of the most popular web server software and hosts about 40% of websites worldwide. Apache is free to use and runs on a variety of operating systems. Apache is stable, secure, and easy to use. Apache is also scalable and supports a variety of modules. Apache is a popular choice for web developers. Apache is used to host websites and deliver web pages to web browsers. Apache is stable, secure, and easy to use. Apache is also scalable and supports a variety of modules.