Platform(s): Windows Phone

The best instant messaging app available for Windows Phone supports damn near every messaging service out there: Skype chat, Facebook, Google Talk, Yahoo!, AIM/iChat, ICQ, Sina, Mig33, MSN/Windows Live, Jabber, VKontakte, Yandex IM,, Mamba, Fetion, RenRen, Gadu-Gadu, MeinVZ and Mail.Ru Agent. What's more, you can multiple accounts for each service. Yeah, like we said, it's the best.