Free Chat Programs

Skype:
I imagine everyone knows about skype, skype helps you make calls from your computer — free to other people on Skype and cheap to phones and mobiles around the world.
Learn more of what skype can do to your business.

ICQ
Popular freeware instant messaging ideal for keeping in touch with friends, family and business. Features includes: live text chat, an SMS utility, video and voice chat, VoIP support, a customisable interface, emoticons (smileys), and lots more besides.
ICQ Products include ICQ 6, ICQ2Go!,ICQ Toolbar,ICQ Wireless,ICQ for Mac,ICQ Labs

Chatstat
Live Chat:Provides efficient live help and assistance to your website's visitors via text chat.

Web Analytics: advanced website satistics
VoIP Callback: Visitors can request a "call back" and give you their number.

Instant Messaging: Chat with other operators and buddies over 7 different IM platforms.