Best VoIP Providers

Voice over internet protocol (VoIP) software uses an IP network to transmit phone calls, and in some cases video calls and other messaging, seamlessly without the need to connect to an extra network. It is a modern form of PBX, short for private box exchange or private branch exchange, a broad term for private telephone networks within organizations. Businesses can utilize VoIP solutions as a reliable means of voice-based communication that leverages a pre-established internet connection. It enables calls between workers on the same network and to external clients or vendors. For organizations with a complete VoIP system, the technology can be used by employees at every level for their basic communication needs. These solutions save the company and its employees money and the hassle related to standard phone hardware and membership plans. VoIP solutions provide base level call features along with other helpful features depending on the service.

VoIP is integrated collectively into company systems, and users can often access features through a plugin on their web browsers or by connecting to the network through a personal phone using their internet connection rather than a wireless network. Depending on the VoIP provider, it may work in conjunction with specially designed hardware or be hosted in the cloud and not require additional hardware. VoIP software may integrate with other platforms such as CRM software to give users easy access to important customer information during calls or web conferencing software to add increased functionality for multiuser video meetings. Conferencing tools will occasionally allow attendees to use their VoIP connections for optimal performance and call quality. Certain VoIP solutions offer features of web conferencing and team collaboration software, such as multiway video chats and instant messaging but only within the established network.

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

  • Transmit voice over the user’s IP network to be received on a separate computer or device
  • Utilize the internet through both public and private networks
  • Allow varying numbers of calls at the same time with no interruption
  • Allow users to bypass landline connections or wireless networks on company or personal devices to tap into the unified network
G2 Crowd Grid® for VoIP
Leaders
High Performers
Contenders
Niche
Momentum Leaders
Momentum Score
Market Presence
Satisfaction
content
Features
Star Rating

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

Compare VoIP Providers
Results: 271
G2 Crowd takes pride in showing unbiased ratings on user satisfaction. G2 Crowd does not allow for paid placement in any of our ratings.
Results: 271
Filter Results
Filter by:
Sort by
Features
Star Rating
Sort By:

    KT advances and benefits the world through an innovative technology with a human face

    Abbax Hosted VoIP provides high performance cloud solutions built to empower businesses small, medium and large.

    Accession Communicator is a communications software that delivers a suite of functions that enable enterprise customers to extend a network operator's critical business telephony services simultaneously to multiple endpoints including a user's laptop, desktop, portable device or mobile handset.

    In Action Desk, contact information is displayed on the same main screen where you manage calls and chats so you can easily view it during or after a conversation. Import contact lists or tie into a CRM system to include more details. Update contact information within Action Desk and have those changes then reflected in your CRM.

    ActivePBX® is a cloud-based business phone system that saves you money while increasing productivity and mobility. The system works with your existing broadband Internet connection, which eliminates the need for costly telecom hardware and traditional phone services. ActivePBX is a division of ActiveServe, Inc. Founded in 2002, ActiveServe offers a wide array of solutions for your business continuity needs.

    Android SIP Client Especially Developed With Keeping The Requirements Of VoIP Service Providers In Mind That's Why Android SIP Client Can Easily Integrate Itself With Any Of The SIP Servers. Other New And Advance Features Are Also Going To Make This Android App Likeable To Mobile Users As Well.

    Provides fully managed and connected endtoend, nextgeneration solutions for multilocation enterprise customers, including SDWAN, Unified Communications (UCaaS), Business VoIP, Hosted Phone Systems, SIP Trunking, MPLS, Manged Failover, Managed Security and Internet.

    Built to streamline Cisco Collaboration administration, Akkadian Provisioning Manager automates provisioning across multiple UC servers and applications. But, the solution is so much more than moves, adds, changes, and deletes–and the additional UC management tools are all included. Akkadian Provisioning Manager stands out as a turnkey solution that’s flexible to your environment, without costly customization.

    Alliance Phones provides reliable and easy to use VoIP Phone systems designed for small and medium businesses.

    Hosted Voice is a telephony service, where an Intranet Private Branch Exchange (IPBX) is not placed in the company itself, but is provided from a server in a data center. The VoIP phones in the company generally communicate with the IPBX server over a broadband Internet connection. The result is a more flexible system with more features and service options.

    Business Voice Over IP (VoIP) solution with crystal clear calling, 24/7 reliability, and can help you save up to 60% off your monthly phone bill.

    Answer360 offers a wide range of enterprise-grade telecommunication solutions to small and medium businesses, educational institutions and intermediate enterprises.

    aql is one of the UK's most innovative telecoms operators and a hidden enabler of the smart city. Working across messaging, voice, data centre, connectivity and M2M & IoT, aql securely connects people, organisations and things to make society better.

    A leading provider of next-generation network access solutions for the mobile enterprise.

    Askozia offers the worldÕs most lightweight and affordable Asterisk-based software phone system. It includes all state of the art business PBX features, easy configuration and real-time statistics.

    Atmosphere Communications Platform is a cloud communication platform software that helps users to streamline the business processes with cloud-based faxing, cloud calling, messaging, and advanced voice recognition functionality.

    Augutech is a cloud-based predictive dialer suitable for small to midsize businesses. Key features include inbound and outbound calling, automatic dialing, call recording and performance analytics.

    Global-ready, hosted business phone system solution with many business-class calling features, including global call forwarding, call recording, call groups, IVR, and more.

    The AVOXI VoIP gateway solution is the preferred VoIP solution for larger customers with existing PBX and phone systems. Cloud-based technology enables efficient use of legacy systems while decreasing hardware investment and maintenance.

    babyTEL provides cutting edge voice and fax communications Services including Cloud Business Phone, SIP Trunking, T.38 Fax, Electronic Fax and Home Phone. Services are provided across the U.S, Canada, and International.

    A Leading Provider of Enhanced Cloud Services - Hosted PBX - Cloud VoIP

    Cloud PBX provides adaptability, scalability, reliability and flexibility. While it provides the ability to keep up with the fast pace technical changes we see daily, it is also secure and reliable.

    Phone systems hosted in the cloud for flexibility, agility, and powerful call-management features

    Business VoiceEdge bundles SIP trunking service with hosted PBX applications. The PBX applications enable directorybased routing of inbound calls and communication features for employees. Users can combine Business VoiceEdge with Business Internet for a singleprovider VoIP solution.

    Buzz Connect offers hosted VoIP and internet solutions.

    The MSP Communications Platform for IT and MSP firms to adopt, use, and offer to their customers as part of the technology services stack.

    Our business phone service is a PBX hosted in the cloud and utilizes Voice Over Internet Protocol (VoIP) to ensure an exceptionally high quality of service and crystal clear communications.

    Calliflower is a conference call solution that allows multiple users to dial into a conference bridge, and to conduct web meetings.

    CARIN is an award winning call recording system. It is a premiere Cisco Compatible solution and supports not only Cisco Unified Communications systems, but Avaya, BroadSoft, IP Trade and any SIP compliant telephony solution.

    Cebod Telecom provides cloud-based telephony solutions to all types of businesses, small or large.

    Celerity Telecom offers two cloud-based auto dialer platforms to meet user needs. Managerial training and support provided for every platform.

    CenturyLink© Contact Center Solutions offer cloud- and network-based services that provide flexibility, scalability, and low TCO, as well as a robust feature-functionality set that delivers an excellent customer experience. Call Routing: Intelligent Pre-Route (IPR) Reduce call transfers and costly reroutes with Intelligent Pre-Route (IPR), a CenturyLink network-hosted application that integrates with Cisco Intelligent Call Manager (ICM). IPR routes calls to the appropriate destination directly from the Toll Free Network. IPR communicates with premise-based call center platforms to determine the location, group, or individual best available to handle incoming calls. Call Routing: Interaction Routing Improve sales and services while lowering contact center costs with Interaction Routing, a network-based contact-center solution that includes inbound ACD routing, outbound dialing, web-contact transaction routing, workforce management, and detailed reporting. IVR: Hosted IVR Improve your customers' experience with Hosted IVR, a scalable, flexible platform that gives you the ability to direct calls according to customer need and agent availability. IVR: EZ Route Improve business efficiency and customer satisfaction with EZ Route, CenturyLink's network-based, self-help, IVR application that provides contact-center functionality, such as menu routing, database routing, intelligent call processing, and links to custom applications. IVR: On Demand IVR Simplify application management with On-Demand IVR, a cloud-based application that's delivered to you as a service. Use the simple GUI to develop call routing applications without the time or money required for software development. Outbound Notification: Notify Improve your customers' experience with Notify, an outbound notification service that allows you to deliver multi-media content to a variety of end-point devices. Pre-defined applications are available to meet standard business needs such as appointment reminders, while custom applications let you create more complex applications to meet unique needs.

    CenturyLink® Enterprise Voice SIP Services provide Dedicated LD and/or Toll-Free Service using a SIP connection, leveraging the CenturyLink network footprint. CenturyLink® Enterprise Voice SIP Services provide Dedicated LD and/or Toll-Free Service using a SIP connection. These services leverage our network footprint in the U.S., EMEA and LATAM to provide more than a point solution for customers solving for operational and efficiency challenges. • Enterprise Long Distance • Enterprise Managed Messaging Service • Enterprise Toll Free • International Toll-Free Service (ITFS) • International Local Inbound (ILI) • TDM/PRI and switched services"

    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​. 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​. Our next-generation business VoIP solution helps improve workforce productivity. With PBX features and functionality without the expense of an on-site PBX, Hosted VoIP helps maximize the return on communication spend, reduced total cost of ownership, and eliminate large capital investments. Hosted VoIP offers advanced calling features over the CenturyLink privately owned fiber network using the BroadSoft BroadWorks platform. That means your calls can be routed fast, you can set multiple devices to ring at the same time or in a particular order, and you can get voicemail by phone, email, or online. Add, move, or change features easily online. And take advantage of the CenturyLink Business Communicator app that lets you talk or video chat, share your desktop or files, and instant message with colleagues. • Scales easily and includes all upgrades and improvements, at no additional cost • Uses phones from the Polycom VVX Series, an enterprise-grade family of IP desktop phones designed to make voice communications effective and productive. Hosted VoIP utilizes the Cisco SPA and Adtran 900 series Analog Telephone Adapters (ATAs). • Online portals allow you to easily monitor and manage your service."

    CenturyLink Voice Complete enables you to easily connect locations using either SIP or TDM to help improve resiliency, call quality and your customers’ experience. CenturyLink® Voice Complete enables you to easily connect locations using either SIP or TDM. By providing you with resiliency, improved call quality and the freedom to select the UC&C solution of your choice, we aim to enhance your customers’ experience and increase workforce productivity. We provide you with a self-service portal environment to manage service features and your telephone numbers – granting you control without the burden of administrative headaches.

    UK Business VoIP Provider bringing your entire phone system together in powerful desktop and mobile apps starting at just 5.00 per month (7 day FREE trial) Circle Loop features include personalised voicemail, call recording, call transfer, contact management, conference calling. Circle Loop integrations include Google, Pipedrive, Hubspot.

    AT&T can deliver a rich array of PBX/IP Telephony features, IP Phone, video phone and soft phone support for making calls over the public switched telephone network, or over the computer via IP, Single Number Reach on wired and wireless devices to reduce missed calls, Voicemail and Unified Messaging to capture your voice messages and make them available via an email message, Presence and collaboration to quickly locate and connect with contacts

    Clarity has a cloud based solution that is ideal for your business. Clarity guarantees to provide customized business solutions with exceptional customer service and support.

    Class 5 SoftSwitch is an intelligent residential VoIP solution for VoIP Service Providers. It offers full-featured IP phone services to residential clients. A scalable Class 5 SoftSwitch solution offered by Ecosmob integrates call routing, e-commerce, invoicing into one user-friendly platform.

    Clearfly mobilizes business voice and messaging applications, and provides reach and visual voicemail features via mobile deskphones.

    Click-To-Call Conversion Delivery is a synergy of mobile advertising and voice communication with your potentials

    Installed at the premises of telecom operators carriers and service providers, HERO hosted PBX software provides businesses of all sizes with secure and reliable VoIP phone services, saving them the hassle and expenses of running their own PBX phone systems in-house.

    The Cloud Sim app is available for iOS and Android devices. Download Cloud Sim to create your account and start saving on calls from your SIM number and multiple mobile identities.

    Colt provides Network, Voice, and Data Centre services to businesses of all sizes around the world.

    CommuniGate Pro provides unprecedented resiliency with open APIs to support business applications in a multi-tenancy environment ideally suited for Cloud hosting deployments or Enterprise topologies.

    CoreDial is a leading white label SaaS provider that empowers more than 500 channel partners to provide cloud communications to more than 20,000 businesses in the United States. CoreDial’s revolutionary SaaS platform, SwitchConnex, enables the channel to quickly and cost effectively sell, deliver, manage and invoice for reliable, private label cloud communication services, including hosted PBX solutions, VoIP, SIP trunking and unified communications. With no hardware or software to buy, CoreDial’s channel partners – MSPs, VARs and IT solution providers – deliver valuable end-user solutions while generating recurring revenue with margins well above industry averages and building value in their personal brand.

    Cradle gives you the full feature set you need to deliver a wonderful phone experience - for both your customers and team. Additionally, we analyse your call history to connect your customers to the right people in your team, at the right time.

    Learn More About VoIP Providers