Anyone traveling probably wants to make lots of calls back home to talk with relatives, friends, and business associates. If using a cell phone, the results can be expensive. However, T-Mobile's free VoIP app called Bobsled can change all that.
All you need is a wi-fi or wired Internet connection of moderate speed to make FREE calls to mobile or landline phones through your desktop's or laptop's web browser, after installing the plugin. It also works on iPads, iPhones, and Android devices. The service seems particularly useful if you're traveling and only have a Wi-Fi connection on your laptop. The service will work from anyplace in the world to call any telephones in the U.S., Canada, or Puerto Rico.