1)   Talkative IRC 0.4.2.6
The easiest and fastest way to meet people online! With Talkative IRC you can chat with thousands of people at the same time. Find people with the same interests as you. Join channels where you can meet people, or start your own channel!

 2)   Dialogoo 2.05
Add a free customized, flash Chat for your website just by pasting 1 line of HTML code. The messenger like software allows you to administrate your chat as a moderator. Get full moderator features like: Real time alerts when someone enters the chat.

 3)   ABChat 1.4
ABChat is a web based chatroom service for your website visitors.