The Apache HTTP Server, commonly referred to as Apache, is web server software notable for playing a key role in the initial growth of the World Wide Web. More at Wikipedia
Internet Information Services - Internet Information Services - formerly called Internet Information Server - is a set of Internet-based services for servers created by Microsoft for use with Microsoft Windows.
.htaccess - In several web servers, .htaccess is the default name of a directory-level configuration file that allows for decentralized management of web server configuration.
POSSE project - The Portable Open Source Security Elements, or POSSE project, was a co-operative venture between the University of Pennsylvania Distributed Systems Laboratory, the OpenBSD project and others.
Stronghold (software) - Stronghold was a fork of the Apache HTTP Server, which included the Secure Socket Layer software to enable https.