Best VoIP Providers - Page 24

How Many VoIP Providers Products Does G2 Track?

Total Products under this Category: 481

Category Stats (Sep 2026)

  • Average Rating: 4.38/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Phone2 (+1.96%) - Among all products in this category, Phone2 recorded the largest rating increase compared to last month

Last updated: September 01, 2026

How Does G2 Rank VoIP Providers Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 61,600+ Authentic Reviews
  • 481+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for VoIP Providers

G2 Grid® for VoIP Providers plotting products by satisfaction and market presence

Highlighted products: RingEX, Nextiva, Zoom Phone, Quo, Dialpad Connect, Webex Calling, Webex Suite, and Aircall.

Underlying data: [Grid® JSON](https://www.g2.com/categories/voip-providers/grids.json?focus%5B%5D=ringex&focus%5B%5D=nextiva&focus%5B%5D=zoom-zoom-phone&focus%5B%5D=quo-quo&focus%5B%5D=dialpad-connect&focus%5B%5D=webex-calling&focus%5B%5D=cisco-webex-suite&focus%5B%5D=aircall)

ITS VoIP

ITS VoIP is a premier provider of Unified Communications as a Service (UCaaS), Call Center as a Service (CCaaS), communication platform software solutions, and collaboration services designed to provide enterprise-class cloud communication solutions to any size business. ITS VoIP platform delivers Voice, Interactions, and Phone capabilities backed by our industry-leading 100% Uptime Guarantee, allowing workers to connect from anywhere, on any device.

Who Is the Company Behind ITS VoIP?

Who Uses This Product?

  • Company Size: 100% Medium

KavKom

Kavkom is a global VoIP business phone system and cloud contact center platform engineered to boost sales performance and streamline customer support. By removing the complexity of traditional hardware, Kavkom transforms your business communications into a high-powered revenue driver. 🚀 SET UP YOUR SALES PHONE SYSTEM IN 60 SECONDS • Instant Provisioning: Get local, national, and international business numbers in just 60 seconds. • Global Reach (60+ Countries) : Expand your global sales coverage using localized business numbers that build trust. • Unlimited Outbound Calling : Scale outreach seamlessly with unlimited calling plans designed for high-velocity sales. • Smart Inbound Distribution : Capture and route incoming leads automatically so no opportunity falls through the cracks. • Zero IT Overhead : No hardware, no setup fees, and complete flexibility with no long-term contracts. • Mobile-First HD Voice : Crystal-clear communication engineered for distributed and modern hybrid teams. 📱 TOTAL MOBILITY: AVAILABLE ON ALL YOUR DEVICES • Multi-Platform Apps : Native applications built for iOS, Android, macOS, and Windows. • Webphone : Make and take calls directly from your browser or via Chrome extension. • Unified Identity : Maintain a professional presence using your business line whether working from home, the office, or on the road. • Universal Click-to-Call : Dial any phone number instantly with a single click from your CRM or web pages. 🤝 BUILT-IN CRM, NATIVE INTEGRATIONS & OPEN APIs • Built-In CRM Included : Access a lightweight, native CRM out-of-the-box on day one. • 1,000+ Native Integrations : Connect seamlessly to HubSpot, Salesforce, Pipedrive, Zoho, Zendesk, Attio, and thousands more via Zapier and Make. • Automated Call Logging : Call history, duration, recordings, and notes automatically sync to your CRM records with zero manual data entry. • Developer-Ready Webhooks & REST API : Automate custom workflows and push real-time call data anywhere you need it. ⚡ ENTERPRISE-GRADE SALES & CONTACT CENTER TOOLS • Predictive Dialer & Auto-Dialer : Triple agent talk time by eliminating unanswered calls, busy signals, and voicemails. • Call Recording & Compliance : Record 100% of inbound and outbound calls for quality assurance, compliance, and training. • Interactive Voice Response (IVR) : Build multi-level auto-attendant menus to route callers to the right team instantly. • Ring Groups: Ring multiple extensions simultaneously or sequentially to minimize hold times. • A Greeting That Reflects Your Brand : Play customized messages—whether before the call is answered, during the hold, or on voicemail. • Live Monitoring & Coaching : Utilize call whisper mode (guide agents without callers listening), call barging, and silent listening. • Real-Time Analytics & Reporting : Monitor campaign progress and team KPIs using interactive real-time dashboards. 💳 SIMPLE, TRANSPARENT PRICING Predictable Billing: No hidden fees, no per-minute charges, and no surprise costs. Total Flexibility: Adapt your subscription to your business growth—cancel or modify anytime with zero commitment. 🤝 DEDICATED SUPPORT & PERSONALIZED ONBOARDING • Dedicated Account Manager : Benefit from a single point of contact for personalized guidance, setup assistance, and ongoing success. • Most Accessible Support : Get real-time help through your preferred channel—available via Phone, Email, Support Tickets, and WhatsApp for instant assistance. 🛡️ SECURITY & ENTERPRISE-GRADE COMPLIANCE • End-to-End Protection : Your communications and data are fully protected for both transmission and storage for your business and clients. • Vetted Reliability : Regular independent security audits and high-uptime infrastructure guarantee peace of mind. Equip your teams with Kavkom and boost your sales today: set up your account in 60 seconds!

Who Is the Company Behind KavKom?

  • Seller: KavKom
  • Year Founded: 2008
  • HQ Location: Paris, FR
  • LinkedIn® Page: www.linkedin.com
    25 employees on LinkedIn®
  • Phone: +33178902698

Kinvo Phone

Kinvo connects you to landlines and mobiles in 150+ countries. No app to download, no subscription to cancel. Pay-as-you-go credits that never expire.

Who Is the Company Behind Kinvo Phone?

  • Seller: Kinvo
  • Year Founded: 2017
  • HQ Location: São Paulo, BR
  • LinkedIn® Page: linkedin.com
    11 employees on LinkedIn®

Kolmisoft M4 SBC

M4 SBC is a Class 4 Softswitch with in-built billing, intelligent routing, DID management, and switching (transcoding) functionality. Telecommunication service providers use M4 to grow their voice business by automating their key operations, such as billing, routing, rate management, reporting, invoicing, and integrations through API. M4 can be used for these business models: SIP trunking, call origination and termination, wholesale transit, A-Z routes, and selling CC (call center) traffic.

Who Is the Company Behind Kolmisoft M4 SBC?

Who Uses This Product?

  • Company Size: 100% Medium

Kolmisoft MOR

MOR is a Class 5 Softswitch with in-built billing, intelligent routing (LCR, quality, percent, priority), number manipulation, rate management, and transcoding functionality. Telecommunication service providers use MOR to grow their voice business by automating their key operations, such as billing, routing, rate management, reporting, invoicing, and integrations through API. MOR can be used for SIP trunking, virtual PBX, DIDs, flat rates, call recording, call centers, resellers, and so on.

Who Is the Company Behind Kolmisoft MOR?

KOMPaaS

KOMPaaS is a telecommunications platform that allows B2B customers to connect telephony software products and services in real-time: Virtual PBX with more than 200 useful functions, Geographic and Nomadic numbers, Chatbots, Automated calls, Multichat, Authentication (Confirmation Call) and other necessary services to automate the processes of interaction with customers. We are a registered telecom operator in four European countries: Austria, Hungary, Germany and Slovakia. The regulator has given us a numbering capacity of more than 50K fixed numbers, which we can connect using SIP Trunk.

Who Is the Company Behind KOMPaaS?

LetsDial

Let'sDial, an extraordinary mobile application that revolutionizes international calling. With its remarkable features, Let'sDial enables VoIP calls from blocked countries, seamless SMS receiving and sending, and offers virtual phone numbers from over 100 diverse nations. Experience unbeatable outbound calling rates to more than 200 countries and benefit from Let'sDial's exceptional verification services for social media platforms. Unlock a plethora of additional features and enjoy a cutting-edge communication experience. Let'sDial—where innovation meets connectivity.

Average Rating: 5.0/5.0

Total Reviews: 1

Who Is the Company Behind LetsDial?

Who Uses This Product?

  • Company Size: 100% Small

What Do G2 Reviewers Say About LetsDial?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the user-friendly communication capabilities of LetsDial, enabling seamless connectivity with others.
  • Users love the user-friendly interface of LetsDial, making it easy to connect with others effortlessly.
  • Users love the easy connection feature of LetsDial, finding it user-friendly and efficient for staying connected.
  • Users appreciate the user-friendly interface of LetsDial, which simplifies connecting with others effortlessly.

What Are Recent G2 Reviews of LetsDial?

LimePhone

All the business calling and messaging features you need, without a phone system. LimePhone is your ultimate solution for convenient calling and texting. With LimePhone, you can enjoy the convenience of a virtual business number for private texting, seamless contact management, and more. Our mission is to simplify your communication needs by providing a second phone number equipped with a comprehensive range of features. Create a brand new local, national, toll free or mobile number, indulge in unlimited texting, and customize your voicemail just the way you like it, as if you were using your primary phone line. Stay organized with our mobile phone tools that ensure you never miss out on what's important. LimePhone's virtual phone number also offers handy features like Auto-Reply, text reminders, and coordinated number management, empowering you to take control of your conversations across all devices. Experience the reliability of LimePhone as your trusted private texting app when you establish a second number. Never let a conversation slip away with automatic chat replies for missed calls. With your second texting number, you can effortlessly send unlimited SMS, MMS, and text messages, enabling you to stay connected at all times.

Who Is the Company Behind LimePhone?

Lineblocs

Lineblocs is a completely customizable low-code/no-code communications solution designed and developed for #SMBs

Who Is the Company Behind Lineblocs?

Lumen SIP Trunking

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."

Who Is the Company Behind Lumen SIP Trunking?

  • Seller: Lumen Technologies
  • Year Founded: 1930
  • HQ Location: Monroe, LA
  • Twitter: @lumentechco
    9,154 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    49,054 employees on LinkedIn®
  • Ownership: NYSE:LUMN

Lumifone

Who Is the Company Behind Lumifone?

  • Seller: Lumifone
  • Year Founded: 2025
  • HQ Location: Warsaw, PL
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

MCUBE Extension / PBX

MCUBE Extension/PBX allows users to seamlessly transfer incoming calls to another phone number or extension. This can be useful in a variety of situations, such as when a caller needs to be transferred to a specific department or individual within an organization. The feature can be easily configured and used through the MCUBE interface, making it a convenient and efficient tool for managing incoming calls.

Who Is the Company Behind MCUBE Extension / PBX?

  • Seller: MCUBE
  • Year Founded: 2006
  • HQ Location: Bangalore, IN
  • Twitter: @MCUBE1234
    137 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    113 employees on LinkedIn®

Mediacore SBC

MediaCore SBC is our carrier-grade Class 4 Softswitch—an all-in-one solution for wholesale VoIP providers. It features automated processes, customizable and intelligent routing, advanced billing with rich reporting, secure VoIP termination, and built-in revenue assurance, enabling seamless, scalable, and dependable management of your telecom wholesale network

Who Is the Company Behind Mediacore SBC?

Megacall

The dialer is the best solution for any call centre that doesnt want to lose valuable time making calls that could be considered dead-end or go unanswered.

Who Is the Company Behind Megacall?

  • Seller: Megacall
  • Year Founded: 2008
  • HQ Location: Mijas Costa, ES
  • LinkedIn® Page: www.linkedin.com
    28 employees on LinkedIn®
Neeraja Prakash
NP
Researched and written by Neeraja Prakash
Updated April 9, 2026