Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Hushed App - Hushed App will allow you to receive a Secondary Phone Number for Private, Long-Distance...
TextMe - TextMe is a free calls and messaging application at both local and international levels.
Burner - Disposable phone numbers -- now with MMS photo 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.
CoverMe - Private texting, calling, vault