Few days back, i get hold on new VoIP application named "Vopium". They are offering 30 mins and 30 sms free trial which attracts me to give it a try. Vopium "reach out" package is quite cheap for calling Asia and Europe but in few countries they are expensive then Skype.
Vopium offers Mobile Sync feature and voice quality is amazing. Before Vopium i have tested Truphone and Nimbuzz for VoIP calls, Truphone "Local Anywhere" package is good where Nimbuzz IM connectivity is superb. Share your experience about these apps..