ClearChat is everything that a chatbox wants to be.
Simple
Flexible
Cheap
Clear
ClearChat also has a very minimal effect on FPS, on average 0-2 frames are lost as opposed to the default source chatbox. No need to worry about your players getting lag from another optimized addon. ClearChat has been tested for about 2 months on my DarkRP server, and players are very satisfied with it. I am yet to hear a complaint. Sounds, good, what do I get?
A chatbox with massive user customization options
Full support for DarkRP, TTT, Prophunt and many other gamemodes
A simple, clear look
A chat tag editor with live previews
Support with anything, from adding support to your gamemode, or fixing little bugs that slip past testing.