Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...

Zaplee - Zaplee is a global cloud-based PBX phone system.

TextMe - TextMe is a free calls and messaging application at both local and international levels.

CallMultiplier - CallMultiplier is an all in one voice broadcasting and text messaging service that allows you to send automated calls and text.

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.

Grasshopper - Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are.