WengoPhone, a provider of VoIP software and services has announced that calls placed using WengoPhone to selected destinations (Argentina, Australia, Austria, Canada, China, France, Germany, Ireland, Israel, Italy, Luxembourg, Moscow, Netherlands, Portugal, Puerto Rico, Singapore, Spain, Sweden, UK, USA ) will be free for the rest of May. This more likely comes in reaction to Skype’s recent announcement of free calls to landlines in the United States and Canada.

Download WengoPhone extension for Firefox and start dialing at will.