Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Nertivia - Chat Client - Chat with friends or anyone around the world, free gif and emoji support.
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.
TextMe - TextMe is a free calls and messaging application at both local and international levels.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.