Apache
Apache is an open-source, freely-available Web server maintained by the Apache Software Foundation.
ASP
Active Server Pages. A type of script used by Microsoft's Internet Information Server Web server to provide dynamic generation of HTML pages.
FTP
File Transfer Protocol. This is the transport protocol used to transfer files over the Internet (outside of the context of the World Wide Web). It is an older transport protocol than HTTP, but is still used in some business environments to pass messages between systems.
HTML
HyperText Markup Language. This is the language most commonly associated with the World Wide Web. HTML combines content and layout information to describe a page that can be shown in a browser.
HTTP
HyperText Transfer Protocol. This is the transport protocol used to send Web pages, multimedia files, and (for now) XML Web service requests and responses over the Internet.