Softwares for sms & chatting

1.Google talk
http://www.google.com/talk/otherclients.html
2.Yahoo! messenger
http://www.soft32.com/download_30.html
3.Rediff bol
http://www.telepk.com/downloads/rediff-bol-8-0/
4.MSN messenger
http://www.soft32.com/download_40.html
5.Windows messenger
http://www.brothersoft.com/downloads/windows-messenger.html