Dingtone - Dingtone is a free call and texting application for making unlimited calls and text messages to any number at the moment registered in any part of the world by any cellular company.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
TextMe - TextMe is a free calls and messaging application at both local and international levels.
FluffyChat - Open. Nonprofit. Cute ?
Talkatone - Android App on. Google Play. Stop paying for cell minutes, texts & landlines; Turn your iPad or iPod touch into a phone; Call/Text even in areas with bad cell coverage; Call/Text when travelling without paying for expensive international minutes.
Talk360 - Talk360 is a best-in-class communication utility that offers a convenient way to connect with loved ones globally.