KoolIM Free Download
Shareware: You can try this program, but this version has some limited features or time usage restrictions. You should purchase it in order to remove those limits.
KoolIM does pretty much the same on the web as a normal installable instant messenger client would do. You can instantly access all your important IM accounts from a single place by just signing in to them directly on the website. After you add all your accounts, click on Sign into Accounts and all your contacts will appear into one interface, separated by the IM type and brand. You can do on the KoolIM anything you would normally do on your designated IM for the particular service.
No special requirements