1. Predictive Call Center, Voice and Text Broadcasting app

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

    freemium $19.99 / Monthly (All-in-One Phone, Team Messaging, and Video Conferencing.)

  3. Switch is a cloud-based phone system built for Google Apps users.

  4. JustCall is a program that allows companies to use a cloud based call service with several important features that make the program perfectly suited for sales teams as well as support teams. Read more about JustCall.

  5. 3CX

    Hosted PBX with CRM integration and mobile apps

  6. Phonebooth is one of the leading voip providers, providing phone systems & phone service for small businesses.

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

  8. All-in-One VoIP Phone System with 50+ business-class features that will boost your sales and improve customer services.

  9. Loop Communications provides hosted VoIP business phone systems to small businesses and mid-sized companies.

  10. International calls from your mobile, landline or computer.

  11. MyOperator is a cloud-based call management system for voice communication purposes.

  12. An open source telephony switching and private branch exchange service for Linux.