LAN Messenger - LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...
MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
Softros LAN messenger - LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
MyChat - Secure instant messenger for any network
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies