1. 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.)

  2. Predictive Call Center, Voice and Text Broadcasting app

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

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

  5. Hosted PBX with CRM integration and mobile apps

  6. Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs

  7. Business phone system.

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

  9. CrazyCall is cloud based platform for sales and marketing teams doing cold calling, market research, information or loyalty campaigns.

  10. Business VoIP, cloud phone systems trusted by more than 150,000 companies. Powered by the leading cloud PBX VoIP platform, Nextiva is rated the best business VoIP service provider.

  11. 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.

  12. Digium offers IP phones, business phone systems, such as Switchvox IP PBX, and custom communications solutions for Asterisk.