Best VoIP Providers - Page 25

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)

Microsip

Who Is the Company Behind Microsip?

  • Seller: Microsip
  • Year Founded: 1986
  • HQ Location: Torreón, MX
  • LinkedIn® Page: www.linkedin.com
    258 employees on LinkedIn®

Mitel OpenScape Voice

Who Is the Company Behind Mitel OpenScape Voice?

  • Seller: Mitel Networks
  • Year Founded: 1972
  • HQ Location: Kanata, Ontario
  • Twitter: @Mitel
    22,451 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    4,002 employees on LinkedIn®
  • Total Revenue (USD mm): $1,300

Mobex Hosted PBX

With Mobex, your phone service will be more valuable than ever. Mobex is more affordable and customizable than big phone service providers that box you into generic packages & contracts.

Who Is the Company Behind Mobex Hosted PBX?

MoSIP C5

MoSIP C5: Next-generation softphone to manage all your business communications effectively from anywhere with a single app.

Who Is the Company Behind MoSIP C5?

M-Two VoIP Phone System

M-Two's VoIP Phone System offers businesses a modern, cost-effective telephony solution that replaces traditional copper phone lines with advanced Voice over Internet Protocol (VoIP technology. Designed to accommodate organizations ranging from small teams to enterprises with over 200 users, this system ensures seamless communication through a user-friendly web-based interface or a fully managed service. By integrating with platforms like Skype and Microsoft Teams, and supporting easy call forwarding to mobile devices, M-Two's VoIP system enhances connectivity and operational efficiency. Key Features and Functionality: - Scalability: Supports from 1 to over 200 phones, catering to businesses of various sizes. - Integration: Compatible with Skype, Microsoft Teams, and mobile devices, facilitating versatile communication channels. - User-Friendly Management: Offers an intuitive web-based interface for easy system administration. - Flexible Deployment: Provides both cloud-based PBX solutions for quick setup and on-premise PBX systems for enhanced features and robustness. - Comprehensive Hardware Support: Supplies and installs all necessary hardware, including 3CX PBX systems and Yealink phones, covering reception, desk, softphones, cell phones, and conferencing systems. Primary Value and Solutions Provided: M-Two's VoIP Phone System addresses the limitations of outdated copper phone lines by delivering a reliable, scalable, and feature-rich communication platform. It enables businesses to manage calls efficiently, integrate with modern collaboration tools, and adapt to evolving communication needs. The system's flexibility in deployment options and comprehensive hardware support ensures a tailored solution that enhances productivity and connectivity for users.

Who Is the Company Behind M-Two VoIP Phone System?

Nagish

Nagish is an AI-powered communication platform designed to make phone calls accessible for individuals who are deaf, hard of hearing, or have speech impediments. By converting speech to text and text to speech in real-time, Nagish enables users to engage in phone conversations seamlessly, ensuring privacy and independence without the need for third-party involvement.

Who Is the Company Behind Nagish?

  • Seller: Nagish
  • Year Founded: 2021
  • HQ Location: New York, US
  • LinkedIn® Page: www.linkedin.com
    33 employees on LinkedIn®

NEC Corporation of America

Backed by over 120 years of innovation and experience, NEC knows what it takes to change and stay ahead of technology's continuous evolution. It is our capability to leverage decades of award-winning technologies and research that has enabled NEC to remain an ICT leader and through problem resolution to bring new value to people, organizations and society as a whole.

Who Is the Company Behind NEC Corporation of America?

NFON SIP Trunk

NFON SIP Trunk is a cloud-enabled telephony gateway that helps businesses transition smoothly from legacy PBX setups to modern, IP-based communications. By leveraging VoIP technology and NFON’s carrier network, it connects your existing phone systems—including on-premises PBXs or Microsoft Teams—to the public telephone network and cloud services without needing hardware replacements. Benefits & Features Effortless transition: Maintain your current PBX hardware and phone infrastructure while gaining the flexibility of cloud-based telephony. You decide when and how to introduce additional features. - Scalable and cost-effective: Consolidate voice and data networks to reduce maintenance costs. Easily scale call volume and branch connectivity, and take advantage of competitive telephony tariffs. - Full control via self-service portal: Configure your SIP trunks independently using an intuitive web portal—manage number blocks, routing, and external call blocking all in one place. - Security, high availability & resilience: Protect your communications with features like call-blocking and fraud detection. High availability is built in via load distribution and backup systems across PBXs, ensuring uninterrupted service. - Flexible number routing: Assign phone numbers dynamically from one number block to multiple PBX endpoints—no need to purchase new blocks, lowering cost and complexity. - Seamless integrations: Connect SIP Trunk to modern tools like Microsoft Teams (via Direct Routing or Operator Connect) and contact-center platforms (e.g., Genesys Cloud), enabling unified telephony across systems. Best Practices in the Industry - Preserve existing infrastructure while evolving: By acting as a bridge to IP telephony, businesses avoid unnecessary hardware refreshes and preserve return on prior investments. - Modular, pay-as-you-go model: Subscription-based flexibility aligns spending with actual usage, supporting both conservative budgets and scaling operations. - Built for remote and hybrid workflows: Integration with UC tools and centralized management allows distributed teams to stay connected without friction. - Operational resilience through redundancy: Load balancing across backup PBXs ensures consistent service, even during infrastructure interruptions. - Self-management for speed and efficiency: Empowered via self-service portals, IT teams can quickly adjust routing, settings, and numbers without vendor dependencies.

Who Is the Company Behind NFON SIP Trunk?

  • Seller: NFON
  • Year Founded: 2007
  • HQ Location: Munich, DE
  • LinkedIn® Page: www.linkedin.com
    380 employees on LinkedIn®

Norstar Cloud

UNIFIED COMMUNICATIONS Voice, messaging, video conferencing and screen sharing all in one Cloud or On-Premise

Who Is the Company Behind Norstar Cloud?

  • Seller: NORSTAR Networks
  • Year Founded: 1987
  • HQ Location: Wilkes-Barre, US
  • Twitter: @NORSTARNetworks
    1,174 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    23 employees on LinkedIn®

OfficeSpaces VOIP Phone System

The OfficeSpaces.co VOIP Phone System is a modern, cloud-based business communication solution designed to replace traditional phone lines with a fully integrated, internet-powered system. Built for startups, small businesses, and growing teams, it enables organizations to manage calls, messaging, and team communications from anywhere—without the need for physical phone hardware.

Who Is the Company Behind OfficeSpaces VOIP Phone System?

Omnivoice

Omnivoice is the fast, secure & powerful answer to your business communication needs. Users can expect: - Some of the best pricing options on the market. - Unmatched voice clarity for uninterrupted conversations. - An intuitive platform that is almost too easy to navigate. - Essential communication tools including business numbers and messaging services. - Advanced call management to optimize client interactions. - Admin tools for effective team management. All these features are backed by responsive support, ready to assist users in maximizing the platform's potential. Omnivoice aims to be the reliable communication backbone for small businesses.

Who Is the Company Behind Omnivoice?

  • Seller: Omnivoice
  • HQ Location: 1 Sansome St, Suite 1400 10104 San Francisco, CA 94104
  • LinkedIn® Page: www.linkedin.com
    1 employees on LinkedIn®

OneCloud Networks

Effective communications systems are critical to every business as they respond to the demands of todays work environment.

Who Is the Company Behind OneCloud Networks?

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