We are pleased to show the first public version of our latest project:
http://www.wsirc.com
wsIrc is a web IRC client (like mibbit), and is free to integrate within any website. You may use it as you want, and connect to any IRC server / network.
The main advantage of wsIrc over mibbit:
- You may fully customize the color scheme [...]

There are hundreds of sites offering free chat services.
The best one in our opinion is Ipocalypse IRC.
Within 1 minute you can start your own chat and embed it in your game or standalone.
Easy to follow instructions are provided.
more info at http://ipocalypse.net
You can see a example of the chat embedded at http://www.cetopwebgames.com/chat.php