Multi authorization with CodeIgniter

[eluser]SpaceCoder[/eluser]
Hi!
I have my own CodeIgniter webapp.

I want to add to my site the multi-authorization from Facebook, Google, Twitter and OpenID sites. (like here - http://stackoverflow.com/users/login)

Is it possible with CodeIgniter?

P.S. I've found some extensions for CI, but they are single and there is no way to merge them.

[eluser]SpaceCoder[/eluser]
Can somebody help me?

[eluser]Cristian Gilè[/eluser]
http://ellislab.com/forums/viewthread/170281/

Cristian Gilè

[eluser]SpaceCoder[/eluser]
[quote author="Cristian Gilè" date="1295046799"]http://ellislab.com/forums/viewthread/170281/

Cristian Gilè[/quote]
Thank you very much, Cristian!