Definition: Apache is a web server software, commonly known as "the Apache HTTP Server"; ASP stands for Application Server. Detailed definitions are: - Apache is an open-source web server that runs on Unix-like operating systems; ASP is a set of applications written in HTML and CSS. For the sake of brevity, here's how the definition can be rearranged: Apache - An Open Source Webserver Software ASP - A set Of Applications Written In Html And Css