YouMail - YouMail turns visual voicemail into a personal assistant for handling all your missed calls.
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Hi Voicemail - Stop robocallers filling up your voicemail
TextMe - TextMe is a free calls and messaging application at both local and international levels.
MightyCall - Virtual phone system that lets you run your business from anywhere.
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.