Best VoIP Providers96Voice over Internet Protocol is a category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls.VerberyVBX1https://media.trustradius.com/product-logos/wi/Dd/S2A3VHDV4VWB-180x180.PNGAjura2https://media.trustradius.com/product-logos/Mn/31/NP2W0LJL1BPZ-180x180.PNGDixa3https://media.trustradius.com/vendor-logos/oS/pA/75KPUQAWPJWO-180x180.JPEGCenturyLink Hosted VoIP4https://media.trustradius.com/vendor-logos/OK/UO/KTW2ZSTJRMM2-180x180.JPEGCenturyLink Traditional Voice Services5https://media.trustradius.com/vendor-logos/OK/UO/KTW2ZSTJRMM2-180x180.JPEGCenturyLink Enterprise Voice SIP Services6https://media.trustradius.com/vendor-logos/OK/UO/KTW2ZSTJRMM2-180x180.JPEGAllstream SIP Trunking7https://media.trustradius.com/vendor-logos/Bg/10/U40EFLW9IMA6-180x180.PNGZebra Workforce Connect8https://media.trustradius.com/vendor-logos/B4/wD/4B614553TKDL-180x180.JPEGInteliquent9https://media.trustradius.com/vendor-logos/Q1/ym/6XAC0K3GH2R9-180x180.JPEGKandy Link10https://media.trustradius.com/product-logos/QG/Yz/15OH21DRCCGT-180x180.PNGCloud Softphone11https://media.trustradius.com/product-logos/5Y/mx/QSG2M2PT9B7K-180x180.PNGCallCenterHosting Predictive Dialer12https://media.trustradius.com/product-logos/Xe/ez/6QB7O8XWC3U7-180x180.JPEGAxmor13https://media.trustradius.com/product-logos/Sr/09/AAUUMH4FCVWJ-180x180.PNGNUACOM14https://media.trustradius.com/product-logos/Zj/Ri/WMK1QT0GI7SV-180x180.JPEGYeastar Cloud PBX15https://media.trustradius.com/product-logos/mO/tp/XZUUKJNP11ZP-180x180.JPEGYeastar S-Series VoIP PBX16https://media.trustradius.com/product-logos/mO/tp/ZW2IT2ST1E60-180x180.JPEGCebod Telecom17https://media.trustradius.com/product-logos/81/Ph/UMS8W1LUPTPG-180x180.PNGYeastar Linkus Unified Communications App18https://media.trustradius.com/product-logos/mO/tp/T1C0S0JLPBTE-180x180.JPEGYeastar K2 VoIP PBX19https://media.trustradius.com/product-logos/mO/tp/KQLP37K3JN5X-180x180.JPEG8x8 Express20https://media.trustradius.com/product-logos/ce/kl/C370LA7125LH-180x180.JPEGVitel Global Cloud PBX System21https://media.trustradius.com/vendor-logos/vk/K4/LSOKKRN2NFLF-180x180.PNGZoom Phone22https://media.trustradius.com/product-logos/PM/Yr/019DDTXVWXWV-180x180.JPEGKamailio SIP Server23https://media.trustradius.com/vendor-logos/BV/RP/TH8LRKM7CPWW-180x180.JPEGConnect First Contact Center Solution24https://media.trustradius.com/product-logos/YV/HJ/0TCOA251M69U-180x180.PNGMiVoice Business25https://media.trustradius.com/vendor-logos/qI/61/XTPUVMKJ8758-180x180.PNG

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)

VoIP Providers Comparison

To more easily compare VoIP products, consider evaluating different options based on these 3 key factors:

1. Standalone voice software vs. UCaaS suite: Are you looking for a simple voice-only solution, or a VoIP product that is embedded within a larger unified-communications-as-a-software (UCaaS) suite? Think about which type of solution will best serve your business needs. If you already use other online communication applications (e.g. video chat, messenger, team collaboration features), then being able to centralize these capabilities within one platform might be worth the extra cost. On the other hand, if you’re mainly looking for voice solution to use while traveling or in place of your own personal phone number, a lighter weight VoIP solution might be the best fit.

2. Pricing model: Does it make the most sense for you to pay for VoIP services per user per month, or on an as needed basis? Many large VoIP vendors offer packages that charge on a per user/month basis. However, other products include free calling to any other individual using the same application, and charge by the minute for other types of calls. If making a large number of calls is part of the job description at your company, as it is for sales reps or call center agents, then you may want to consider a per user/month package.

3. Mobile compatibility: Today’s workforce is becoming increasingly mobile, and making sure your employees can access VoIP services while traveling or working remotely is more important than ever. Many VoIP vendors already offer both iOS and Android mobile applications, but make sure to check that the products your considering have mobile applications that support all your devices. Look for mobile application feature ratings on product scorecards.

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. Owing to this, VoIP solutions provide 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 128)

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.

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.

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.

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...

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

NUACOM headquartered in Ireland offers a VoIP phone system providing unlimited concurrent calls, unlimited virtual queue, auto-attendant, call recording, and other features.

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

Yeastar Cloud PBX is a full-featured cloud-based phone system the vendor states is ideally suited for SMBs. Besides call communication and telephony features, the platform provides desktop softphone, BYOD mobility, IM, presence, unified messaging and CRM integration. The vendor states that with i...

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Yeastar states that their S-Series VoIP PBX appliance is easy to use, flexible and full-featurd for small and medium sized businesses, and is designed to help them make a leap in efficiency and cost-savings. With the related Linkus Unified Communications App, Linkus' Softphone App, the features ...

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

Cebod Telecom provides voip-based telephony solutions to all types of businesses, small or large. Cebod Telecom’s VoIP phone solutions provide businesses with instant access to their telephone systems from anywhere and at all times. Cebod Telecom offers the Pay-Per-Line business pricing model whe...

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The Yeastar K2 VoIP PBX is a large capacity pure hardware and software IP-PBX designed for medium and large enterprises and supports 2000 users and 500 concurrent calls. Promising robust enterprise-level Unified Communications features, Yeastar K2 is designed to streamline the communications and ...

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

8x8 Express is a phone system that includes unlimited calling within the U.S and Canada, HD video conferencing, business SMS and team chat. It comes preconfigured and can be set up so that a business can start making and receiving calls in less than 5 minutes. It includes a dedicated business pho...

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Vitel Global headquartered in Piscataway is a hosted VoIP service provider offering Business VoIP and Hosted PBX systems for businesses of any size, including small businesses, who can enjoy high end VoIP phone and PBX system.

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

Zoom Phone is an IP PBX, or VoIP, product offered by online meetings and UCaaS vendor Zoom. With Zoom Phone, users can bundle their voice, video, voicemail, messaging, meetings, and conferencing through one application. It can carry out calls over cellular voice, cellular data, or WiFi connection...

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ACD - Gain total control over your inbound call flow with the Inbound Call Routing Platform. Key features such as skills-based agent selections, flexible scheduling, and our proprietary QueueFlow routing engine ensure you can easily route calls to follow your exact specifications. Our management ...

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

MiVoice Business is a unified communications platform from Canadian Mitel Networks Corporation, for businesses with 5 to 65,000 potential users.

Frequently Asked Questions


What’s the difference between VoIP and unified communications software?

VoIP, or voice-over-internet-protocol, software enables users to place voice calls using an internet connection rather than relying on a traditional landline phone or cellular data. In comparison, unified-communications-as-a-service (UCaaS) software is a larger suite of integrated online communication technologies including VoIP, video and audio chat, business messaging, and team collaboration features. Check out our article about the differences between VoIP and UCaaS to learn more.

What’s the difference between a fixed and non-fixed VoIP?

A ‘fixed’ VoIP phone number is tied to a physical location (e.g. personal or company address), these types of VoIP lines are typically more secure than non-fixed VoIP services. Non-fixed VoIP lines are not attached to a specific location and can be purchased and accessed internationally. Note, VoIP providers are more likely to provide access to local emergency services for fixed-VoIP numbers. Read more about the difference between fixed and non-fixed VoIP services.

What are the most important things to consider when buying a VoIP solution?

A recent TrustRadius survey of 200+ VoIP users found that these are the 5 main buying criteria to keep in mind when looking for a new VoIP service:

  1. Price
  2. Ease of use
  3. Reliability of the service
  4. Call quality
  5. Access to 24/7 support

To learn more about VoIP software in general and read product reviews, visit our VoIP category page.

What do businesses use VoIP software for?

VoIP software can be used for a range of business communication needs. Common use cases for VoIP services include:

  • Having a personal VoIP phone number
  • Internal business communication
  • Sales communication
  • Client/customer communication
  • Customer service/support
  • Contact center activities

Learn more about VoIP software and read product reviews on our VoIP category page.