turn based

A small, easy to use, multi-platform, GUI-based utility.

Claws Mail is a GTK+ based, lightweight, and fast e-mail client and newsreader.

Dada Mail is a simple web-based mailing list manager.

Boss Enterprise Portal Platform facilitates the delivery of web-based apps

An elegantly simple TAPI based caller ID application.

BlueChat is a fast, free, web based chat program with many features.

We named this CSS tab menu "Half Moon" based on its look.

Web Guestbook ASP script provides you an ASP based guestbook.

This is a web-based MSN messenger clone.

This is a vertical, predominantly CSS based multi-level menu.