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Best VoIP Providers

TrustMaps are two-dimensional charts that compare products based on satisfaction ratings and research frequency by prospective buyers. Products must have 10 or more ratings to appear on this TrustMap.

VoIP Providers Overview

What is VoIP Technology?

VoIP stands for Voice over Internet Protocol. It is technology for delivering voice and other forms of communication over an Internet Protocol or IP. VoIP providers offer communications services that the business world relies on for collaboration. Typically, phone, video conferencing, and live chat are conducted on the VoIP platform, without assistance from the public switched telephone network (PSTN). There are also hybrid solutions that combine VoIP with PSTN.


VoIP presents the underlying technology for Unified Communications Platforms.

Benefits of IP Telephony

Compared to regular telephone networks, IP telephony aims to be:

  • Cheaper

  • Simpler

  • More scalable

  • Higher-availability

  • Equally or more reliable

VoIP Providers vs. Unified Communications as a Service

Some VoIP providers are geared for SMBs who want a business phone with advanced telephony-type features and maybe some conferencing capability or minutes.


More sophisticated providers offer a highly scalable, end-to-end unified communications platform designed for larger enterprises. These UCaaS vendors tend to offer more reach and flexibility compared to point tools for collaboration, live chat, and web conferencing. They also aim to encompass all communication within the enterprise and across its boundaries, including integrated contact center functionality.


The top vendors offer both a unified communications platform as well as a low-cost VoIP solution.

VoIP Provider's Features & Capabilities

VoIP Providers generally support the following functions:


Cloud PBX:

  • Hosted PBX

  • Multi-level Interactive Voice Response (IVR)

  • User templates

  • Call reports

  • Directory of employee names


Call Management:

  • Answering rules

  • Call recording

  • Call park

  • Call screening

  • Message alerts


VoIP System Collaboration:

  • Video conferencing

  • Audio conferencing


Mobile Apps:

  • Mobile app for iOS

  • Mobile app for Android


Advanced Features:

  • Integration with contact & customer information systems (e.g. CRM, Outlook, etc)

  • Internet faxing

  • Ring group (splitting calls or rotating them within a group of employees)

Additional Factors to Consider

Security: Authorization, Authentication, Transport Layer Security (TLS), Media encryption (SRTP)

IP networks can be vulnerable. So, various methods of providing communication privacy and security should be considered. Vendors may vary in how they attempt to secure communications.

Business Phones & other Hardware Components

Vendors must offer hardware to support their platforms' capabilities, such as phones, headsets, servers, and other infrastructural devices. Subtle differences between these devices may contribute to very similar and relatively equal software platforms being perceived very differently in terms of quality or fit. Therefore, these subtleties should not be discounted.

Call & Communications Analytics

A great deal of data is transmitted through these systems. So, some software provides analytics to evaluate agent, channel, and call performance. These analytics can be used to seek out inefficiencies or anomalies, endpoint status, and more. Integration with VoIP analytics platforms might help monitor system performance.

Field, Telework & Telecommute

One potential benefit of VoIP and virtual offices is the ability to interact with personnel (or support personnel as they interact with customers) as though they were in the office. This includes dashboard interfaces, a reliable connection, quality streaming, and security protocols and methods (e.g. Virtual Private Network / VPN). Products may vary in their ability to function outside the boundaries of the enterprise.

Pricing Information

VoIP providers often charge on a per month, per user basis. Prices generally start at around $20 per month, per user, and will increase from there with more advanced features.


Another factor to consider in the cost structure is the hardware. Many providers offer hardware rental as part of their service, at additional cost.

More Resources

VoIP Products

Listings (101-125 of 125)

We don't have enough ratings and reviews to provide an overall score.

CallHub is designed to integrate with an organization’s CRM. According to the vendor this solution enables users to reach the right people the right time with their virtual call center, voice and SMS broadcasting software. CallHub is available in over 200 countries. According to the vendor, key...

6 Ratings

Cisco Business Edition 7000 is a collaboration and universal communication, VOIP / telephony, conferencing and messaging platform for enterprises of 1000 to 5000 employees, pre-configured (or configurable) to meet the needs of enterprises in many different verticals.

We don't have enough ratings and reviews to provide an overall score.

ReliaTel is a Unified Communications platform with VoIP analytics & monitoring capabilities. It allows users to manage and support their IP, voice, and data network environments and service levels. ReliaTel is provided by Tone Software Coroporation.

We don't have enough ratings and reviews to provide an overall score.

VerberyVBX is a cloud-based call center solution that is based on Twilio OpenVBX.

We don't have enough ratings and reviews to provide an overall score.

Ajura is a mobile application developed by Ajura Pte Ltd. According to the vendor, this app allows users to save up to 90% on international mobile roaming. Using Ajura, one can receive calls on his or her home country mobile number. Ajura also helps users make low-cost calls via 3 options namely...

We don't have enough ratings and reviews to provide an overall score.

MessageBird Voice is an API that allows users to incorporate VoIP calling into their app, website, or communication system, from cloud carrier MessageBird. It includes Call Recording, Call Transcription, Answering Machine Detection, and other features. Calls are billed per second. According to th...

We don't have enough ratings and reviews to provide an overall score.

Through the RestcommONE Marketplace, service providers can quickly offer CPaaS-enabled applications, from real-time voice and video to messaging applications, that deliver the services their business customers are demanding. And because service providers become their own CPaaS , they benefit from...

6 Ratings

Freshcaller is a call center software for startups and small teams. Freshcaller lets businesses / teams set-up and run a powerful call center without spending a lot of time and money. It is suited for phone teams of size 1- 30.You can create custom greeting texts based on specific call scenarios....

We don't have enough ratings and reviews to provide an overall score.

Twilio now offers Flex, a cloud-based contact center management platform featuring support for multi-channel communications (e.g. voice + social media, etc.) and messaging to provide many customer support and collaboration features.

We don't have enough ratings and reviews to provide an overall score.

8x8 now offers the X Series, an integrated suite combining VOIP, contact center communications applications (e.g. SMS, Internet fax, auto attendant, IVR, etc) and workforce optimization (skills-based call routing, call barging & monitoring, etc).

We don't have enough ratings and reviews to provide an overall score.

Dixa, headquartered in Copenhagen, offers their VoIP and call center software, featuring browser based phone, email, and live chat, intelligent skill-based call routing and other agent management tools, queue management and prioritization, and other features designed to provide scalable customer ...

We don't have enough ratings and reviews to provide an overall score.

CenturyLink® Hosted VoIP delivers advanced call management, enables mobility, and supports hybrid SIP configurations. CenturyLink was recently recognized by Frost & Sullivan with the 2018 Growth Excellence Leadership award for VoIP and SIP services​. With PBX features and functionality withou...

We don't have enough ratings and reviews to provide an overall score.

CenturyLink® serves the voice business calling needs of customers of all sizes with a comprehensive portfolio that includes premise equipment, telephone numbers, local, long distance, toll free, and international services. A complete range of network solutions complement these services, supportin...

We don't have enough ratings and reviews to provide an overall score.

Inteliquent headquartered in Plymouth offers a range of voice and communication services, including VoIP.

We don't have enough ratings and reviews to provide an overall score.

Ribbon Communications headquartered in Westford offers Kandy Link, a WebRTC Gateway to bridge VoIP services with web services.

We don't have enough ratings and reviews to provide an overall score.

White-label softphone platform where you can create, test and deploy mobile and WebRTC endpoints in less than 30 minutes.Cloud Softphone is an application platform as a service (APaaS) that allows CSPs to create new bundles for their customers and saves them millions that would have been wasted o...

We don't have enough ratings and reviews to provide an overall score.

Aircall headquartered in Paris provides a VOIP system for business designed to support contact centers, featuring IVR and automated call routing, conference calls, shared call inbox and call notes, unlimited concurrent calls and call queuing, and many integrations with CRM or marketing systems to...

We don't have enough ratings and reviews to provide an overall score.

Cisco Webex Calling is a cloud-based phone system optimized for midsize businesses, providing a PBX solution with a virtual receptionist and personalized voice mailboxes, calling with extension numbers, direct inward dialing (DID) numbers, directory URIs (email-style addresses), or directory-base...

We don't have enough ratings and reviews to provide an overall score.

The vendor reports that CallCenterHosting’s Predictive Dialer is an intelligent dialer hosted over the cloud that gives an edge to the outbound calling system. It is a computer telephony integration (CTI) that aims to help in connecting agents with prospects and enhancing the customer experience....

We don't have enough ratings and reviews to provide an overall score.

Ring4 headquartered in San Francisco offers a VoIP app that allows business owners and others to add a second (or third) phone line to their mobile phone.

We don't have enough ratings and reviews to provide an overall score.

Axmor is a custom software development services company focused on providing IT solutions for tech startups and small businesses that require additional expertise across multiple IT fields. They help develop systems, automate business processes, and handle integration with third-party services. A...