Lamp is a Latest Chatty client for Windows created by CRasterImage in 2011. It currently supports most major chatty features, including posting, LOLing, and ShackTags. As of November 7th, 2016 Lamp is at version 11.2.
Lamp Version: 2.6, released February 26, 2012
If you have installed it before, you would need to uninstall it first. After installing, check for updates. Since the installer is very out-of-date.
Auto Update Exe (for updating if you already have Lamp installed)
Add this program to the folder with Lamp.exe in it. Then run the program.
After that, you don't need to do anything to get new updates.