MAHC is a complex PHP system that installs easily and allows people to chat using only HTML. Features include multiple rooms, private chat, user colored chat text, games (checkers, chess, hangman, tictactoe, dicezee, crossword), private chat, a "weak" AI chat, Inter-chat messaging, selectable MIDI music, and 3D graphical smilies. The Web server requirements are currently only PHP4 and a crontab facility. The current version is stable, but lacks in documentation.
Asymptopia Crossword Builder (Math/Text) is an application that runs in any modern Web browser, but does not require an Internet connection (if it is installed locally). The application was designed to allow teachers to quickly produce well-designed, challenging activities. The application features a configuration panel where the user can either enter their own word-hint pairs, or generate math-crossword problems via a single button. The math functionality generates word:hint pairs like: "four:7/x-3/8=11/8", where the hint corresponds to the problem, and the student would write the letters "four" in the corresponding boxes of the puzzle.
Online Chess Club is a PHP chess game. It allows you to play any number of games simultaneously against your friends online using only a Web browser, provided you own some PHP-ready Web space. It recognizes checkmate, stalemate, and allows you to draw a game. In addition, finished games may either be archived or deleted.