Written by Fernanda Alvarez Piñeiro Reviewed by James Macey Updated on July 3, 2023 On this page 8x8 RingCentral Vonage GoToConnect Ooma Nextiva Net2Phone US Cloud phone system benefits Methodology: how did we find the best cloud phones for business? Expert Verdict Expand Our site is reader-supported – by clicking our links, we can match you with a potential supplier, and we may earn a small commission for this referral. Based on our independent research, the best cloud phone system currently available is 8×8. Scoring an impressive overall 4.7/5 in our research, it has a generous range of integrations and is easily scalable. Whether you need a hyper-functional cloud phone system or you just want the basics, 8×8 is flexible and will mold smoothly into your business's communication structure. But there are plenty more excellent systems out there to choose from, and our extensive research and experience in the world of cloud telephony has empowered us to select the best seven.Read our reviews to compare these top cloud phone systems, and don't forget to use our free quote-finding tool to get tailored quotes from the right cloud telephony services for your business. What are the top 7 cloud phone systems for US businesses? These are the providers we recommend based on our research. Use our cost comparison tool to find the best value service for your business8×8 – Best overallRingCentral – Best for customer service teamsVonage – Best for small businessesGoToConnect – Best value for moneyOoma – Best for onboarding new staffNextiva – Best for large officesNet2Phone – Best for low-cost international callingWhat is a cloud phone system?A cloud phone system is a business telephone solution based on Voice over Internet Protocol (VoIP) technology. Instead of being installed on-site using hardware like Private Branch Exchange (PBX), it's hosted by a third-party provider on a cloud server.One of the key advantages of cloud-based phone systems is their location independence – they can be accessed from any device with an internet connection, including desktop computers, laptops, mobile phones, tablets, and even certain desk phones.Compared to traditional landlines, cloud phone systems offer more advanced features and a higher degree of flexibility at a lower cost, while providing a streamlined platform for effective communication within a business.The Best Cloud Phone SystemsAfter our extensive research into different phone systems, we've determined these are the 7 best cloud phone system providers: Swipe right to see more 0 out of 0 backward forward Best Overall Option 8×8 RingCentral Vonage GoToConnect Ooma Nextiva Net2Phone Expert Rating 4.7 Expert Rating 4.7 Expert Rating 4.5 Expert Rating 3.2 Expert Rating 4.3 Expert Rating 4.3 Expert Rating 4.3 Best For Overall Cloud Phone System Best For Customer Service Teams Best For Small Businesses Best For Value For Money Best For Onboarding New Staff Best For Large Offices Best For Low-Cost International Calling Price Custom Price $20 per user, per month – $35 per user, per month Price $19.99 – $39.99 per user, per month Price $27 – $32 per user, per month Price $19.95 – $29.95 per user, per month Price $18.95 – $40.95 per user, per month Price $18.99 – $29.99 per user, per month Domestic Calls Unlimited Domestic Calls 1000 inclusive inbound minutes 2000 outbound minutes per user Domestic Calls Unlimited to domestic landlines Domestic Calls Unlimited Domestic Calls Unlimited Domestic Calls Unlimited Domestic Calls Unlimited International Calls Unlimited to 14 countries International Calls N/A International Calls N/A International Calls Free international calling to 50+ countries International Calls N/A International Calls N/A International Calls Free international calling to 40+ countries Key Features Onboarding supportCall queueRing groupsAnalyticsCustomizable call routingCall recording Key Features Voicemail to textHigh-definition (HD) voiceMulti-level auto attendantVisual voicemail and voicemail to email Key Features Onboarding supportCall queueRing groupsCall recordingCall monitoringAnalyticsWeb conferencing Key Features Call barge*Call whisper*Call recording*Analytics*CRM, Helpdesk, web conferencing integrations Key Features Virtual receptionistRing groupsMusic on holdOne toll-free number Key Features Unlimited calling within the US and CAFree local and toll-free numberVoicemail to email notificationsAuto attendantBusy lamp fieldHold music Key Features Unlimited nationwide callingUnlimited international callingAuto attendantCall queueRing groupsVoicemailBusy lamp field Try 8x8 Try RingCentral Try Vonage Get free quotes Try Ooma Get free quotes Compare Quotes 8×8 – Best Overall Cloud Phone System 8x8 4.7 Pricing $24 -$140 per user, per month Get free quotes 8x8 review Quick overview Founded in 1987, 8x8 is one of the biggest providers of cloud-based communication solutions, with over one million users worldwide. Over the years, 8x8 has made several strategic acquisitions to expand its portfolio. In 2018, it acquired the open-source technology Jitsi, enhancing its ability to offer versatile communication capabilities. In 2020, 8x8 acquired callstats.io, a Finnish startup that provides SaaS call quality monitoring for popular communications apps. Read more + Read less - Strengths 24/7 support Multiple compliance certifications + multi-factor authentication Easy to scale Weaknesses Premium pricing Mediocre consumer review score Pricing See more See less PlanPrice (per user, per month) X2 $24 X4 $44 X6 $85 X7 $110 X8 $140 With an impressive 4.7/5 rating in our in-depth research, we like 8×8 because it ticks all the right boxes when it comes to business communication needs. With a generous range of integrations, including CRM, Helpdesk, Web Conferencing, and External Live Chat, you can easily integrate 8×8 with your pre-existing software infrastructure and bring all your business tools under the same umbrella. It also is compatible with a broad range of third-party desktop phones, including Polycom, Cisco, Panasonic, and Yealink, making it a powerful and painless tool to set up. 8×8 also offers onboarding support with their Customer Success Managers, making it a top-notch option for helping new employees adapt to the communications system used by your business.The part where 8×8 does falter is in price. Scoring a 2.5/5 in this category in our research, it's a more expensive option compared to the other providers we look at. If you're looking to tighten your belt, then we'd recommend looking at bOnline or Dialpad instead. RingCentral – Best Cloud Phone System For Customer Service Teams RingCentral 4.7 Pricing $20 - $35 Get free quotes RingCentral review Quick overview With its innovative collaboration solutions, RingCentral empowers businesses to connect, seamlessly with their customers, teams, and partners. Founded in 1999, RingCentral has established itself as a trusted partner for businesses of all sizes, offering reliable, user-friendly, and flexible communication solutions. In 2021, RingCentral was announced as Mitel's exclusive unified communications partner, providing its cloud-based software to Mitel's customer base of over 35 million users. Read more + Read less - Strengths 24/7 customer support for users Highly scalable High uptime guarantee Weaknesses Mediocre consumer review score Prices are a touch on the expensive side Pricing See more See less PlanPrice (per user, per month) Core $20 Advanced $25 Ultra $35 RingCentral MVP is our top cloud phone system for customer service teams because it's so comprehensive, offering enterprise-level features at affordable prices. RingCentral's most popular plan, ‘Premium', comes with 2,000 free minutes per person, video meetings for up to 200 participants, advanced call features such as ‘whisper' and ‘barge', and multi-site management, so you can use the system seamlessly across different business locations. Plus, RingCentral can be integrated with over 250 apps, so it's likely to work well with the systems your various teams already use. Thanks to all of these great assets, RingCentral scores a 4.2/5 for features and 4.3/5 for external connections.We do think, however, that RingCentral has room for improvement in its price. Scoring a 3.5/5 in this category in our research, RingCentral isn't the best option for businesses that are looking to save money in their next unified communications investment. If you're looking for a more affordable option, we'd recommend looking at Vonage, bOnline, or GoTo Connect, all of which score above a 4/5 for price. Vonage – Best Cloud Phone System For Small Businesses Vonage 4.5 Pricing $19.99 - 39.99 Get free quotes Vonage review Quick overview Vonage is a trusted partner for businesses looking for user-friendly and innovative communication solutions. Founded in 1998 as Min-X, its original goal was to provide residential VoIP (voice over internet protocol) phone services. Now, it has expanded its cloud-based services to include virtual phone systems for businesses, and advanced communications APIs.In July 2022, Vonage was acquired by multinational telecommunications company Ericsson, which employs around 100,000 people. It’s headquartered in Holmdel Township, New Jersey. Read more + Read less - Strengths Integrates with tons of CRM software Easily scalable All plans include 24/7 live support Weaknesses Limited security options Missing some important outbound communication features Pricing See more See less PlanPrice (per user, per month) Mobile $19.99 Premium $29.99 Advanced $39.99 Boasting a set of shiny features like dynamic call routing and post-call analysis, Vonage’s embrace of AI in its Premium subscription plan gives your small business the flexibility it needs to keep customers happy and scale up your operation. Its provision of tools, metrics and data gives you a 360-degree view of the interactions between your customers and agents, enabling you to turn insights into actionable items that heighten your ROI. Vonage Premium offers a wide range of customer support features and low monthly costs are a recipe for scaling up your operation.Although these come at an additional cost, Vonage also lets you tap into its wide set of ready-made integrations, as it’s compatible with systems like Hubspot, Salesforce, Zendesk, Slack, and Office 365. This allows you to unify all your business communications in one spot, giving your agents all the necessary tools to provide the best customer service possible. These features explain why over 700 customer centre customers have turned to Vonage internationally. Thanks to all of these great assets, Vonage scores a 4.5/5 overall in our research, as well as 4.5/5 for features.However, where Vonage stumbles is in its security features. Scoring a 3/5 in this category in our research, Vonage doesn't come equipped with multi-factor authentication or password rules. If you'd like to feel more reassured on the security front, we'd recommend going for 8×8 or Google Voice instead. Did You Know? 67% of small businesses said VoIP has helped them improve the handling of phone calls and 57% it has helped them perform when working remotely. GoToConnect – Best Cloud Phone System For Value For Money GoToConnect 4.3 Pricing $27 - $32 Get free quotes GoToConnect review Quick overview GoTo offers a range of cloud-based products – including GoToConnect, its VoIP system – designed to help businesses work and collaborate more efficiently and securely from anywhere. Founded in 2003 and based in Boston, Massachusetts, GoTo was formerly known as LogMeIn Inc. before its rebranding in 2022.With tens of millions of users, over $1.3 billion in annual revenue, and a global workforce of more than 3,500 employees, GoTo is one of the largest SaaS companies in the world. Read more + Read less - Strengths Very easy to scale Glowing reputation among users Offers fantastic value for money Weaknesses No 24/7 user support channels Few ready-made integrations Smaller variety of features Pricing See more See less PlanPrice (per user, per month) Basic $27 Standard $32 GoToConnect is a safe option if you’re looking to get value for your money because it promises a seamless onboarding process, which involves getting your softphone cloud system working within a day. For as little as $24 per user, per month, it has the richest offering of international calls, giving you access to free international calling to over 50 countries. This makes GoToConnect a fantastic option for businesses that are looking to cater to –or maintain– an international clientele. Regardless of which subscription you choose, GoToConnect gives you access to all the inbound communication features you might need, including ring groups and call queue. This great deal earns GoToConnect a 4.3/5 for price and a 4.4/5 for scalability in our research.However, and ironically so, GoToConnect isn't the greatest at external connections. Scoring a 2.6/5 in this category in our research, you miss out on external live chat, analytics, and workspace integrations. If you want a puzzle piece that will fit in with all the software integrations you need, we'd recommend looking at RingCentral or 8×8. ▶ Read more: The Best Softphone Apps for Business Ooma – Best Cloud Phone System For Onboarding New Staff Ooma Office 4.3 Pricing $19.95 - $29.95 Get free quotes Ooma Review Quick overview Ooma is a cloud-based communications provider based in Sunnyvale, California. It offers advanced phone, video, and messaging solutions that are customizable for businesses of any size and home phone services for residential customers. In 2023, Ooma won PC Magazine's Business Choice award for the top VoIP service for offices for the tenth year in a row. The company was founded in 2004 and has grown to serve over one million users. Read more + Read less - Strengths Offers dependable customer support 24/7 50+ call features such as call conferencing and call flip Rave reviews from users Weaknesses Limited collaboration features Weak security and authentication service Pricing See more See less Enterprise Standard $19.95 Enterprise Enhanced $24.95 Enterprise Call Center $29.95 One of the biggest sticking points for businesses is merging new staff into the workflow of your business, so finding a VoIP system that is intuitive and offers generous support during the onboarding process is crucial. Our in-depth research reveals that Ooma is a great choice for ensuring you can easily onboard new staff.Alongside a broad offering of customer support features, including user forum, knowledge base, live chat, and 99.999% uptime guarantee, you also are assigned a Customer Success Hero. Just as the savvy name indicates, Customer Success Heroes are designed to help you throughout the installation and day-to-day operation of your VoIP system. This way, you can rest assured that your employees will get all the guidance needed to to take advantage of Ooma’s techy perks and features. Thanks to this range of generous customer support features, Ooma was awarded a 4.5/5 for customer support in our research and a 4.3/5 overall.The unfortunate piece of news is that Ooma performs pretty poorly on the security front. Scoring a 1/5, Ooma doesn't come equipped with multi-factor authentication, password rules, or user permissions. If this sounds like a turn-off, we'd recommend looking at 8×8, which scores a 5/5 for security. Nextiva – Best Cloud Phone System For Large Offices Nextiva 4.3 Pricing $23.95 - 37.95 Get free quotes Nextiva review Quick overview Founded in 2006, Nextiva is a connected communications company that offers a comprehensive suite of tools and services to help businesses thrive. With a focus on smart and efficient communication, the company provides VoIP phone services, video conferencing, text messaging, and CRM software to more than 100,000 businesses. In 2022, Nextiva ranked #2 on Comparably.com's list of the best places to work in Phoenix. This is based on anonymous employee sentiment, which demonstrates Nextiva's dedication to fostering a positive work environment for its staff. Read more + Read less - Strengths Excellent customer service Rich set of features Weaknesses Not easily scalable Limited ready-made integrations Pricing See more See less PlanPrice (per user, per month) Essential $18.95 Professional $22.95 Enterprise $32.95 If your offices are on the larger side of the spectrum, we’d recommend going for Nextiva because of its generous collaboration and inbound communication features, and flexible setup. Boasting its own first-party hardware and compatibility with third-party desktop phones, including Cisco, Yealink, and Polycom, Nextiva is a solid choice if you want to have a range of options for what your VoIP system looks like.On top of that, we think Nextiva is a good fit for large offices because of its high-ranking customer support – offering knowledge base, live chat, 24/7 live support, 99.999% uptime guarantee, and onboarding support. Nextiva scores a strong 4.5/5 in this category. This means that as you’re taking on new employees and teaching them the logistical ropes of your business, you will have reliable support on the backend.The part where Nextiva trips slightly is for scalability. Scoring a 2.9/5 in our research, it misses out on a bunch of important management features like call transcripts and call-flow designer. If this is an absolute must for your business, 8×8 could be the way to go. ▶ Read more: The Best VoIP Phone Systems Net2Phone US – Best For Low-Cost International Calling Net2Phone US 4.2 Pricing $24.99 - $29.99 per user, per month Get free quotes Quick overview Net2Phone is a fast-growing unified communications provider that offers simple and stress-free cloud phone solutions. Founded in 1990, it’s a subsidiary of IDT Corporation. In 2022, Net2Phone was named a UCaaS (unified communications as a service) growth and innovation leader by Frost & Sullivan. To date, it has 1,800 employees and 200,000 customers worldwide, with operations in nine countries across three continents. It’s headquartered in Newark, New Jersey. Read more + Read less - Strengths Affordable pricing 24/7, US-based customer support via phone or email Rave reviews from users Weaknesses Limited ready-made integrations Not very scalable Doesn't offer call flip, barge, or whisper Pricing See more See less PlanPrice (per user, per month) Office $24.99 Office Pro $26.99 Office Power $29.99 All the systems we’ve discussed here provide unlimited US calls at no extra cost – but what about calls to other countries? Most systems will charge extra fees for them, but Net2Phone stands out because it comes with unlimited calling to more than 40 countries. This means speaking to clients and teams across the globe is completely free, allowing you to maintain and expand your international clientele.Net2Phone can also give you virtual phone numbers and dial tones in over 50 countries and 300 cities, so if you’d like to establish a presence in places like Europe or Asia, your contact options are easily taken care of. We’re also quite impressed that Net2Phone has international offices and data centers, and hosts more than 33 billion international minutes every year. Thanks to these assets, Net2Phone US scores a very respectable 4.2/5 in our research.However, if you're looking to make the transition to Net2Phone US, keep in mind it scores a slightly-above-average 2.8/5 for external connections in our research. This can make scalability trickier and cause operational hiccups as you try to consolidate your unified communications structure. If you want a system that can easily melt into your pre-existing software infrastructure, we'd recommend going for RingCentral or 8×8. Cloud phone system benefitsThese are the top reasons your business should consider using cloud phone systems…Cost savings and scalabilityCloud-based phone systems offer significant cost savings compared to traditional landlines. By eliminating the need for on-premise hardware, your business can reduce upfront costs and ongoing maintenance expenses. You can easily adjust your communication needs by adding or removing phone lines and features, allowing you to scale up or down as required without incurring additional costs. This flexibility makes cloud phone systems a cost-effective choice for businesses of all sizes.Flexibility and mobilityYour business can enjoy the flexibility to work from anywhere with an internet connection, whether employees are in the office, working remotely, or on the go. This is because they can access their business phone system using various devices. Mobile apps and call routing options enable seamless communication on smartphones and tablets, ensuring that important calls are never missed. This mobility empowers your business to stay connected and productive regardless of your physical location, increasing efficiency and responsiveness.Enhanced features and integrationCloud phone systems offer a wide range of advanced features that go beyond traditional landlines, including voicemail-to-email transcription, call recording, auto-attendants, and integration with other business tools like customer relationship management (CRM) systems and collaboration platforms. Such integration allows for streamlined workflows, improved customer service, and increased productivity. With enhanced features and integration capabilities, your business can elevate your communication capabilities and better meet the evolving demands of your customers and employees. Methodology: how did we find the best cloud phones for businesses?Our team of independent researchers have conducted an in-depth dive into 10 of the most used and top-rated phone system suppliers on the market. Prioritising all the possible features that businesses might need from an cloud phone system, we’ve narrowed it down to the top seven providers that shine through because of their integrations, scalability, features, and customer support – all of which can help you strengthen the communication arm of your business.We’ve also aggregated customer reviews from platforms like Trustpilot and Capterra to assure you that our knowledge is not only robust on paper, but also in practice. Regardless of which choice you make to meet the demands of your business, our research-backed recommendations will match you with the top players in the VoIP-verse. Expert Verdict So there you have it – our list of the best cloud phone systems for businesses in the UK.Our all-time favourite cloud phone system is 8×8. Scoring an impressive overall 4.7/5 in our research, it has a generous range of integrations and is easily scalable. Whether you need a hyper-functional cloud phone system or you just want the bare-bone basics, 8×8 is flexible and will mould smoothly into your business's communication game plan. However, if you know 8×8 isn't the best fit for your company, RingCentral is also part of our Hall of Fame. It outcompetes 8×8 in external connections with a superior 4.3/5 in this category in our research, which tells you it will swiftly adapt to your pre-existing software infrastructure.If you're still not sure which system is right for you, don't worry – our free quote-finding service is here to help. Simply tell us about your needs, and we'll match you up with the best UK cloud phone system suppliers for you. They'll then be in touch with free, no-obligation quotes that have been tailored to you. It's the quickest, easiest way to compare the right options for your team. Did You Know? VoIP makes it easy to accommodate calls anywhere, allowing companies to increase productivity by up to 20%. Save by comparing free, tailored quotes from the best phone system providers for you Do you already have a cloud phone system? Yes No FAQs What is a cloud telephone system? The software in a cloud phone system is hosted in the cloud, rather than on your own servers. This means you and your team will be able to access and use the system anywhere, on any device with an internet connection – in other words, it's totally mobile, and you won't be limited to using it at your workplace. That's what makes cloud telephony so great for remote and hybrid working. How does a cloud phone work? As we've said, a cloud phone system is hosted in the cloud, with the data stored securely on a server that you and your team can access via the internet. Therefore, any device that can access the internet, including smartphones, tablets, laptops, and IP desk phones, can be thought of as cloud phones.IP desk phones are usually plug and play, and can be easily installed with the phone system software. With other devices, such as smartphones, it's usually a case of downloading the phone system app, and then simply logging in. Is a cloud-based phone system VoIP? First of all, let's clarify what VoIP actually is. VoIP (voice over internet protocol) is a technology that carries phone calls over the internet, rather than over traditional landlines. All cloud-based phone systems utilise VoIP tech to make calls over the internet, and so in that sense, they can also be called VoIP systems.That said, it's important to understand that not all VoIP systems are cloud based. Some can be hosted on your own servers, rather than in the cloud.Learn more in our comparison of the best VoIP providers in the US. How much is a cloud mobile phone? This depends on which mobile phone you want, and which cloud phone system you choose. Cloud phone system prices range from £8 per user, per month to over £100 per user, per month – but you'll need to factor in the cost of the mobile phones you choose. Alternatively, you can have your employees use their personal smartphones to access the business cloud phone system when they're working remotely. Written by: Fernanda Alvarez Piñeiro Fernanda is a Mexican-born Expert Market writer, specialising in providing in-depth insights about business software to help businesses of all shapes and sizes thrive. From VoIP systems to project management software, she’s passionate about helping businesses find the tools and methods that will help give them an edge over their competitors. Fernanda has ample journalistic experience, having written for a multitude of online magazines about topics ranging from Latin American politics to cryptocurrency. Reviewed by: James Macey Senior Business Software Researcher James thinks all businesses can improve if they use the right technology. At Expert Market, he utilises his 4+ years experience as a researcher to offer specialised advice on a wide range of categories from CRM to Fleet Management.