Olark free alternatives

I am looking for something similar 开发者_开发问答to Olark. Such as reall time chat on a website with customers where you can use an IM client. I would also like it to be white label. Does anyone know of any free alternatives or a library you can drop into a project?

Take a look to SignalR framework which exactly allows what you want.

Here's an article from Scott Hanselman who has made a chat in 12 lines of code and another one with more details about the technology.

Finally, a sample chat application.

Can't you build an alternative with framework likes :

http://www.ape-project.org/

a demo can be found here :

http://www.ape-project.org/demos/1/ape-real-time-chat.html

Or by using the Html 5 websockets ?

I'm not sure it's what you want, but tale a look on : https://www.frozenmountain.com/websync/