Evaphone allows users to enjoy free international PC-To-Phone calling from there website or any other flash supporting device even from mobile phones. The service supports almost all major countries of the world including USA, UK, Canada, India, Pakistan etc. with each country having a fixed single free call duration with unlimited numbers of calls. Click here to get start with free international landline and mobile phone calls. Click here for more details on how to use the free service on the site.
Source: https://thehackernews.com/2010/12/free-phone-calls-to-land-line-and.html