Best VoIP Providers - Page 38

How Many VoIP Providers Products Does G2 Track?

Total Products under this Category: 562

Category Stats (Nov 2026)

  • Average Rating: 4.4/5 (↑0.01 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: VoiceStack (+10.92%) - Among all products in this category, VoiceStack recorded the largest rating increase compared to last month

Last updated: November 01, 2026

How Does G2 Rank VoIP Providers Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 84,800+ Authentic Reviews
  • 562+ 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, Quo, Zoom Phone, Dialpad Connect, Webex Suite, Webex Calling, 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=quo-quo&focus%5B%5D=zoom-zoom-phone&focus%5B%5D=dialpad-connect&focus%5B%5D=cisco-webex-suite&focus%5B%5D=webex-calling&focus%5B%5D=aircall)

YOVU

YOVU providesfull-featured cloud phone system for small to medium sized businesses.

Who Is the Company Behind YOVU?

  • Seller: Yovu
  • Year Founded: 2011
  • HQ Location: London, CA
  • LinkedIn® Page: www.linkedin.com
    17 employees on LinkedIn®

yuuphone

yuuphone is the cloud-based phone system of choice for working in office, at office or on the road. With +150 VoIP features users can make calls on any device (desk phone, smartphone, desktop) under the office number and remain integrated into existing communication processes (e.g. call forwarding, ring calls) regardless of location. Admins can add or remove numbers and devices easily to sclae their team and integrate the software to existing CRM and business systems.

Who Is the Company Behind yuuphone?

  • Seller: yuutel
  • Year Founded: 2001
  • HQ Location: Wien, AT
  • LinkedIn® Page: www.linkedin.com
    32 employees on LinkedIn®

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How it works

Zentrunk

Who Is the Company Behind Zentrunk?

  • Seller: Plivo
  • Year Founded: 2011
  • HQ Location: Austin, TX
  • LinkedIn® Page: www.linkedin.com
    196 employees on LinkedIn®

ZIWO

With ZIWO, simply talk to your clients! ZIWO is a cloud contact center software (CCaaS) solution in the GCC that enables businesses to manage customer communication through voice calls and WhatsApp messaging in a single, unified platform. Designed for customer service, sales, and support teams, ZIWO simplifies multichannel communication and enhances team productivity. It is widely adopted across the Middle East and North Africa region (MENA), and supports both remote and in-office operations. This customer service platform is ideal for industries such as e-commerce, logistics, finance, real estate, healthcare, and much more - especially for companies operating in multiple markets that require local phone numbers, multilingual support, and seamless CRM integration. Common use cases include inbound customer support, outbound sales, and WhatsApp-based service desks. The key ZIWO features include: - Multichannel Communication: Consolidate voice calls and WhatsApp conversations in one platform, with full support for English, Arabic, and French to serve diverse audiences. - High-Quality Voice Services: Calls are routed via licensed local telecom providers and trusted international carriers to ensure clear, uninterrupted communication. - CRM Integrations: Instantly connect to over 15 major CRM platforms to streamline workflows, increase agent productivity, and improve customer relationship management. - Extensive API Library: Access 500+ APIs for advanced customization and integration into your existing business systems and infrastructure. ZIWO empowers companies to deliver consistent, high-quality customer experiences by streamlining communication and simplifying technical complexity - all through a scalable cloud-based contact center solution. It enables teams to operate more efficiently, respond faster to customer needs, and maintain full visibility across all interactions in real time.

Average Rating: 4.9/5.0

Total Reviews: 74

How Do G2 Users Rate ZIWO?

  • Has the product been a good partner in doing business?: 9.8/10 (Category avg: 8.8/10)

Who Is the Company Behind ZIWO?

  • Seller: Ziwo
  • Year Founded: 2010
  • HQ Location: Dubai (UAE)
  • LinkedIn® Page: www.linkedin.com
    115 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Operations team lead.
  • Top Industries: Financial Services, Consumer Services
  • Company Size: 51% Large, 38% Medium

What Do G2 Reviewers Say About ZIWO?

AI-generated summary from verified user reviews

Pros
  • Users commend ZIWO for its user-friendly interface that simplifies both implementation and daily operations.
  • Users highlight the easy implementation of ZIWO, making setup straightforward and hassle-free.
  • Users highlight the excellent customer support of ZIWO, enhancing their experience and easing problem resolutions.
  • Users appreciate the clear call quality of ZIWO, enhancing their communication experience with ease of use.
  • Users value the easy integrations offered by ZIWO, enhancing their operational efficiency and user experience.
Cons
  • Users report experiencing technical issues with ZIWO, including lagging that disrupts their workflow.
  • Users experience unreliability with ZIWO, facing unexpected outages that disrupt urgent communication needs.
  • Users criticize the forced online status of ZIWO, which complicates their experience by receiving unwanted calls.
  • Users report frequent internet connection failures with ZIWO, disrupting their communication and performance.
  • Users experience frequent dialer issues, with calls dropping several times a week causing frustration and interruptions.

What Are Recent G2 Reviews of ZIWO?

What Are G2 Users Discussing About ZIWO?

Zoiper

Zoiper's Whitelabel Softphone is a customizable VoIP solution designed for businesses seeking to offer a branded communication experience to their users. This platform enables companies to tailor the softphone's interface, features, and functionalities to align with their brand identity and meet specific operational requirements. Key Features and Functionality: - Brand Customization: Incorporate your company's logo, color scheme, fonts, and icons to create a cohesive brand experience. - User Interface Personalization: Develop a custom interface that enhances user experience and reflects your brand's aesthetics. - Smart Provisioning: Configure different features and licenses for various user groups, such as novice or business users, ensuring tailored functionality. - Custom Feature Sets: Add or remove features according to the specific needs of different user segments. - Flexible Licensing Models: Choose from per-user to unlimited user installations to suit your business model. - Advanced Communication Support: Ensure compatibility with IMS/RCS, VoLTE, and secure communication protocols for enhanced connectivity and security. Primary Value and User Solutions: Zoiper's Whitelabel Softphone empowers businesses to deliver a seamless and branded communication experience to their users. By offering extensive customization options, companies can align the softphone with their brand identity, enhancing user engagement and satisfaction. The platform's flexibility in provisioning and feature configuration allows businesses to cater to diverse user needs, improving operational efficiency. Additionally, support for advanced communication standards and secure protocols ensures reliable and secure communication, addressing the critical needs of modern enterprises.

Average Rating: 4.4/5.0

Total Reviews: 52

How Do G2 Users Rate Zoiper?

  • Has the product been a good partner in doing business?: 8.9/10 (Category avg: 8.8/10)
  • Phone Calls: 9.2/10 (Category avg: 9.2/10)
  • VOiP Number: 9.3/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 9.0/10 (Category avg: 8.6/10)

Who Is the Company Behind Zoiper?

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 53% Small, 45% Medium

What Do G2 Reviewers Say About Zoiper?

AI-generated summary from verified user reviews

Pros
  • Users find Zoiper to be an affordable solution, particularly beneficial for businesses with various locations and remote employees.
  • Users love the ease of use of Zoiper, allowing for quick and effortless call-making.
  • Users love the easy integrations of Zoiper, praising its straightforward setup and feature accessibility.
  • Users love the easy setup of Zoiper, appreciating how straightforward it is to integrate and start using.
  • Users praise the easy setup and integration features of Zoiper, enhancing their overall experience significantly.
Cons
  • Users find the interface accessibility lacking, wishing for a more user-friendly experience while using Zoiper.
  • Users express privacy concerns regarding Zoiper, highlighting potential vulnerabilities and risks of data breaches.
  • Users highlight security concerns with Zoiper, noting potential vulnerabilities and risks with sensitive data handling.
  • Users report frequent crashes with Zoiper, requiring a safe mode restart to regain functionality.

What Are Recent G2 Reviews of Zoiper?

What Are G2 Users Discussing About Zoiper?

Zultys Integrated Contact Center

Zultys delivers an easy-to-use, secure, and reliable platform designed to streamline all forms of communications and increase productivity for any size business. Our Integrated Contact Center (ICC) solution to optimize operations, expertly handle customer calls, and increase employee productivity. The ICC comes pre-packaged with features to streamline processes and improve customer service departments of any size and call volume: • Advanced Call Routing based on real-time activity • Call Recording — Full-time and on-demand • Call Attached Data (CAD) for customizable Agent • Scripts, wrap up/exit codes, and more • Optional integration with external CRM and Outlook, workforce management applications, and other 3rd party tools • Multiple Reporting options • Webchat Capabilities • Multimedia Queue — Calls, webchats, and callback requests are queued in the order they are received • Customizable music-on-hold, position in queue, and expected wait time announcements • Last Agent Routing option will send repeat callers to the same Agent that handled their previous call • Fully integrated fax server • Wallboard for real-time, web-based ICC group analysis The ICC solution comes fully integrated into Zultys Advanced Communicator (ZAC). Our all-in-one UC further empowers call center agents with an additional suite of collaboration tools like IM and SMS messaging, video and conference calling, file and image sharing between employees, presence alerts, webchat capabilities, and a powerful mobile application. Optimize your employees’ time for the best impact on your business with Zultys’ Integrated Contact Center.

Average Rating: 4.0/5.0

Total Reviews: 28

How Do G2 Users Rate Zultys Integrated Contact Center?

  • Has the product been a good partner in doing business?: 9.3/10 (Category avg: 8.8/10)

Who Is the Company Behind Zultys Integrated Contact Center?

  • Seller: Zultys
  • Year Founded: 2006
  • HQ Location: Sunnyvale, CA
  • LinkedIn® Page: www.linkedin.com
    172 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 70% Medium, 30% Small

What Are Recent G2 Reviews of Zultys Integrated Contact Center?

What Are G2 Users Discussing About Zultys Integrated Contact Center?

Neeraja Prakash
NP
Researched and written by Neeraja Prakash
Updated April 9, 2026