Phone line for Businesses or Individuals. Ring4 provides companies with a cloud solution to manage phone lines as simply as they manage emails. The Ring4 work on any iOS or Android device and can be managed via the Admin Console. Ring4 phone numbers are mobile and support unlimited texting, unlimited calling, voicemail and call recording. Ring4 starts at $9.99/month/line.
Grasshopper - Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are.
Burner - Disposable phone numbers -- now with MMS photo support
Vumber - Toll Free or Local Numbers for Your Business
Shuffle - One Phone, Multiple Numbers
Dialpad - Switch is a cloud-based phone system built for Google Apps users.
OpenPhone - Simplest way to own a business phone number