I think Skype is the best. Have been in touch with friends all over the world for the last few years with Skype.
Skype? I uninstalled it because it downloaded crapware without my consent. Never wanted to re-install it.
Hi allSee the best live chat software is Skype it also provide video calling and has best quality and for chat you can also go for yahoo messenger.
If you want a customized video chat app that you don't have to pay for I would HIGHLY recommend looking at opentok (tokbox), I'm just finishing up a video conferencing app built with their api and there are limitless possibilities with it. The do have some out of the box ready to go embed apps for people that don't have the skills to build something on their own.
If you need a free solution, try www.focalscope.com and use their startup edition. Their system has a live chat module that will generate the live chat code for you, then you just paste it into your site. You also have full analytics to analyze your live chat interactions with.
Skype, Gtalk, Yahoo Messenger, these are popular chat program. Skype is best and fully featured program compare to all.
You can try the free version of FocalScope, it includes a live chat system that is very easy to integrate into your site + it has analytics to measure customer engagement. You can read more about it at www.focalscope.com