Which mobile Skype client will win?

Updated: Skype’s lack of desire to release a mobile client has opened a small window of opportunity for a few start-ups – iSkoot, Mobivox, Fring, and EQO. These companies are creating clients that run the Skype service inside a server farm, and allow you to make and receive Skype calls on your mobiles. It is no surprise, that they have received major infusion of venture dollars.

The latest to get a big fat round of funding is EQO, that just announced that it has raised $9 million from Venture West, Growth Works and BDC Capital. The company has raised over $12.5 million in funding.

EQO is also benefiting from VC interest in mobile VoIP, though I have some serious questions about the potential payoff. The big question, however, is that which of these three will emerge as an eventual winner. Will it be Skype, that will finally release a mobile client of its own? (Skype currently offers a Windows Mobile version of its client, though its functionality is limited.) Have your say in our poll.