DSChat
DSChat is a simple live chatroom script that doesn't require any databases.
If you'd like to see what DSChat v2 will look like, you can download the beta below. Development may or may not continue, though all rights are still reserved. The beta is not guaranteed to be fully secure or fully functional--it is strictly work in progress, with many features not even started yet and others not yet fully refined. We take no responsibility for any problems caused by using the beta on a live site.
Download DSChat v2 BETA (15kb zip)
Please note that DSChat v1 is very old (one of my first scripts), so YES, I KNOW it's glitchy. But it still works, so perhaps one of you will still find it useful.