Best VoIP Providers

Voice over internet protocol (VoIP) software uses the internet to transmit phone and video calls, effectively creating a unified network regardless of a worker’s location. One advantage of VoIP is that telephone calls via the internet don’t incur a surcharge beyond what the user is already paying for internet access, just like users don’t pay to send individual emails. Some VoIP applications come bundled with popular web browsers. Others are standalone products. Business-specific VoIP is commercial-class versions of residential VoIP services that provide small and medium-sized businesses with advanced features and functionality such as private branch exchange, conference calling, desk-to-desk calling, music on hold, and automated attendants. Most business and enterprise VoIP providers support multiple simultaneous calls.

To qualify for inclusion in the VoIP category, a product must:

  • Be able to share any or all: audio phone calls, video phone calls, pictures, screens, messages
  • Utilize the internet through both public and private networks
  • Be utilized across different (internal) communication channels as well as across differing platforms like web browsers and mobile applications.

VoIP Providers Grid® Overview

The best VoIP Providers products are determined by customer satisfaction (based on user reviews) and scale (based on market share, vendor size, and social impact) and placed into four categories on the Grid®:
  • Products in the Leader quadrant are rated highly by G2 Crowd users and have substantial Market Presence scores. Leaders include: WebEx, Skype, and Zoom
  • High Performers are highly rated by their users, but have not yet achieved the market share and scale of the Leaders. High Performers include: and
  • Contenders have significant Market Presence and resources, but have received below average user Satisfaction ratings or have not yet received a sufficient number of reviews to validate the solution. Contenders include: Google Hangouts
  • Niche solutions do not have the Market Presence of the Leaders. They may have been rated positively on customer Satisfaction, but have not yet received enough reviews to validate them. Niche products include: Avaya Scopia, Cisco Unified Communications Manager (CallManager), Mitel Unified Communications, and IBM Sametime
G2 Crowd Grid® for VoIP
High Performers
Join me
Google hangouts
Freeconferencecall com
Avaya scopia
Cisco unified communications manager callmanager
Mitel unified communications
Ibm sametime
Market Presence
Linked in no background

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    Skype is my favorite social network to make video calls and keep working communication by that means. I always have direct contact with people who ...

    VoIP reviews by real, verified users. Find unbiased ratings on user satisfaction, features, and price based on the most reviews available anywhere.

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    Kate from G2 Crowd

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