Alternative To Skype

I need a good alternative to Skype that me and my friends can use. It has to quick, clean, and easy to use.

Try Jitsi, or if you use Firefox, it's integrated voip 'Hello' is also an option

so is Ekiga

This is still in beta but, it still works pretty well.

Warning: as far I know it has not been penetration tested for security vulnerabilities.

that new kimdotcom messenger maybe?

i agree that skype realy sucks, i´m still using windows live messenger, i just refuse to go to skype lol.

There is Telegram 

I started using this with a group of friends and its great for text chatting but it does not support voice calling.