i will develop a web phone application based on Twilio API and you will be able to make cheap calls to any country in the world
You can use your web browser as a telephone using Twilio Client. you can place outgoing calls to any phone using a usb headset or microphone and also create a virtual dial-pad to send touch tone digits. You may also optionally provision a traditional phone number to ring in the browser when called.
you enters a phone number you want to call and clicks the 'Start Call' button. Twilio will call the specified phone number and setup a call between that phone number and the browser. The call status and a disconnect button are displayed on the page and a browser based dial-pad is available for touch tone entry. The parties may talk until one of them disconnects. If an incoming call is detected, the browser will prompt the user to accept the call, and make the connection if confirmed.