Burner - Disposable phone numbers -- now with MMS photo support

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

Shuffle - One Phone, Multiple Numbers

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

OpenPhone - Simplest way to own a business phone number

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