webDiplomacy (previously phpDiplomacy) is a Web implementation of a popular turn based strategy game in which you battle to control Europe. It is not a game of luck: to win you must be diplomatic and strategic, forming and breaking allegiances and bargains with your friends and enemies. It features an interface intuitive and simple enough that seasoned Diplomacy pros and complete newcomers can play alongside each other.
DutchPIPE allows Web developers to make virtual multi-user "avatar" environments. Each Web page becomes an abstracted environment or location where visitors and other items on the page are visualized. This status is retained as visitors move around. A lot of real-time interaction is possible, resulting in persistent interactive page environments. DutchPIPE uses AJAX and the DOM for the browser, and it works without Java, Flash, plugins, or firewall adjustments.
Nethack Records is an on-demand statistics generator for Nethack that is meant to be run on a Web server. It has several types of statistics, ranging from character info to daily and weekly stats. It is implemented with a modern template system, and is very customizable. One can sort by most field-types, such as character class or gender. The code is separated from the XHTML by means of HTML::Template. CSS is utilized to its fullest extent, allowing you to make it look however you like, without knowing Perl.