Sun ONE

Sun ONE stands for the Sun Open Net Environment. The Sun ONE Web Server is a competent, secure, scalable, multi-platform web server. It's relatively easy to set up and administer.

It was originally developed by Netscape and was first known as Netscape Enterprise Web Server, later renamed to Netscape iPlanet Web Server. Sun does not seem to be adding features since they bought it from Netscape. As a result its popularity has dropped.

The web server has since been renamed again to the Sun Java System Application Server.