Desktop chat clients
You can use any of these chat clients to connect to our chat:
Small, easy-to-use chat client. I recommend to try this one first.
Very powerful chat client with a lot of features.
This has a handy feature to send screenshots to your contacts. It is a big download though, and has some hassles like links not always opening when you click them in a chat window.
This one has a nice feature that allows people to draw on a shared whiteboard. This can only be used if your contact is also using this chat client. I don't like the user interface too much though.
This only lets you log in to Google's chat server (with your gmail info). It is recommended to use one of the other chat clients that let you choose which chat server to use.
FireFox Add-on
Adds a side-bar in FireFox that allows you to chat with your contacts.