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.Twilio Flex1https://media.trustradius.com/product-logos/vB/pv/1K3P60C258WT-180x180.JPEGSolgari Cloud Communications2https://media.trustradius.com/product-logos/p6/T1/UBXCUNA0111R.jpegHERO Hosted PBX3https://media.trustradius.com/product-logos/3l/Xp/0N54X1TS2CD7.pngVoxeet4https://media.trustradius.com/product-logos/yf/St/EU85MRT90O1U.jpegFlowroute5https://media.trustradius.com/product-logos/qh/Vs/HT3NKM2ZW4WU-180x180.PNGFoiply6https://media.trustradius.com/product-logos/07/K7/M0OHMIX308CC.octet-streamMondoTalk7https://media.trustradius.com/product-logos/54/Za/S7I2DNAR96KA-180x180.PNGPhone Power8https://media.trustradius.com/vendor-logos/VB/ta/RG92FH2MOLTJ-180x180.JPEGHERO Hospitality PBX9https://media.trustradius.com/product-logos/zo/DC/8CMUHE7EZISG.pngChoiceView Live Agent10https://media.trustradius.com/product-logos/Xd/qp/SHK2UG9TVTTG.pngRTW Voice11https://media.trustradius.com/product-logos/eo/GY/J48OHOFMV0ST.gifSuper Receptionist12https://media.trustradius.com/product-logos/I8/zl/FQV8HVLUK42M.jpegZello for Work13https://media.trustradius.com/product-logos/LK/C1/3AQJI2O8BBT0-180x180.PNGIceWarp14https://media.trustradius.com/product-logos/Tr/wD/6ETGHC8L1RQF.jpegFathom Connect15https://media.trustradius.com/vendor-logos/M1/T1/TPTAPVZUVXO7-180x180.PNGAdtran NetVanta16https://media.trustradius.com/product-logos/sj/i3/LQS9XM01DML6.jpegOpenScape Voice17https://media.trustradius.com/vendor-logos/5N/A7/7RX2SF5X2KVD-180x180.PNGPhonedeck18https://media.trustradius.com/vendor-logos/uN/Xx/TQOXZWPVSPJJ-180x180.PNGMessageMedia SMS19https://media.trustradius.com/product-logos/8f/B5/S8KVS3SAISU7-180x180.PNGTata Unified Communications20https://media.trustradius.com/vendor-logos/9d/Ph/EI24Z9N3FB7C-180x180.PNGTeleWare IP Telephony and Unified Communications21https://media.trustradius.com/product-logos/J9/hD/2MRK3A2IINJR.pngTelonium22https://media.trustradius.com/product-logos/qw/gv/AZ6TB0GCJB37.pngVoiceLink23https://media.trustradius.com/product-logos/Q0/7N/2IIJLIT0B8RA.pngVersature24https://media.trustradius.com/product-logos/2Z/ts/3LXU4TDVS3JG.pngvocalnet25https://media.trustradius.com/product-logos/bQ/YS/TUAV2SADPBL5.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 (51-75 of 124)

5 Ratings

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.

Voxeet is a telephony and VoIP software solution from Voxeet.

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

Flowroute is a telephony and VoIP software solution, now owned and supported by Intrado (acquired June 2019).

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

Foiply is a telephony and VoIP software solution from Foiply.

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

MondoTalk operates an IP Telephony network with servers around the world. They specialize in integrating office phone systems with mobile handsets, enabling the use a single handset anywhere.

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

Phone Power is a telephony and VoIP software solution from Fabasoft Cloud GmbH.

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

RTW Voice is a telephony and VoIP software solution from Road To Work Hosting.

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

Zello for Work is designed to turn any smartphone into a user-friendly push-to-talk (PTT) device on any network. This can be done with the user’s existing smartphones or ruggedized devices. Zello users can speak in groups or to direct contacts, decreasing nonessential noise in the work environment.…

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

IceWarp, from the company of the same name headquartered in Springfield, Virginia, is an email applications and unified communications offering.

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

Fathom Connect is a cloud based phone system with no hardware. The network is mirrored across servers spread across the United States and internationally. The vendor says this approach guarantees 99.99% uptime for their customers.  Fathom Connect pricing is straightforward with no hidden fees.  Pla…

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

Adtran, headquartered in Huntsville, Alabama, offers NetVanta, a suite of products including IP communication platforms.

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

OpenScape Voice, formerly Siemens OpenScape, from German headquartered company Unify (a collaboration betweem Siemens AG and the Gores Group) is a unified communications platform with VoIP.

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

Phonedeck is a solution that integrates mobile telephony into CRM systems like Salesforce or Oracle. It is a mobile CTI solution that lets users control their smartphone inside the CRM system and track their mobile calls. Phonedeck is available for Salesforce and Oracle users.Phonedeck supports sale…

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

MessageMedia offers enterprise communications via SMS. The company says it serves 15,000 clients worldwide including Fortune 100 financial services, healthcare, and technology companies, as well as government and non-profit entities. According to the vendor, key values include reliability, as well a…

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

Tata Communications is a modular unified communication platform for global voice, unified conferencing, managed services, and communication APIs through its tier-1 IP netework available in five continents.

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

Telonium is a telephony and VoIP software solution from Telonium.

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

VoiceLink is a telephony and VoIP software solution from Voice Link.

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

Versature is a telephony and VoIP software solution from Versature.

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

vocalnet is a telephony and VoIP software solution from VocalNet.

TrustRadius Top Rated for 2020

2020 Top Rated VoIP Providers

There are plenty of options out there, but here's our shortlist of the best VoIP Providers. These products won a Top Rated award for having excellent customer satisfaction ratings. The list is based purely on reviews; there is no paid placement, and analyst opinions do not influence the rankings. To qualify, a product must have 10 or more recent reviews and a trScore of 7.5 or higher, indicating above-average satisfaction for business technology. The products with the highest trScores appear first on the list. Read more about the Top Rated criteria.

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.