TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.

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

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.

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.

RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies