VoIPWings
VoIPWings is an online VoIP calling facility for Windows that helps you make low-cost, long-distance phone calls from your PC to any landline or mobile phone. For placing your calls, you need only to register and purchase credits of $5, $10, $25, $50 and $100. After you select the amount of credits you want to spend on your calls, you will receive a PIN number via email that allows you to make and receive your calls. Additional features include: SMS text messaging, calls recording and caller line identification management.