Web Messenger

https://imo.im/ - Web Skype
E-messenger

http://www.e-messenger.net/

Ebuddy
http://www.ebuddy.com/index.php

MSN Web Messenger

http://webmessenger.msn.com/?mkt=pt-br http://webim.live.sg/

ILoveIM.com Web Messenger

http://www.iloveim.com/

l.Imeebo.com

http://wwwl.meebo.com/index-pt-PT.html

webmessenger.yahoo

http://webmessenger.yahoo.com/

messenger.sapo.pt/im/

http://messenger.sapo.pt/im/

http://www.meetyourmessenger.com.br/

http://www.tokbox.com/#