Best VoIP Providers - Page 3

How Many VoIP Providers Products Does G2 Track?

Total Products under this Category: 566

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
  • 85,000+ Authentic Reviews
  • 566+ 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)

MightyCall

MightyCall combines professional call center software with user-friendly features designed for small and medium-sized businesses. Our cloud-based system requires no hardware, providing powerful functionality with simplicity. With the best UI in the industry, MightyCall enables SMBs to manage their setup easily without losing the quality and range of enterprise-level features. Set up - Enjoy the simple setup process with our intuitive flowchart. Communicate - Manage the flow of both incoming and
outbound calls and increase your team’s
productivity. Collaborate - Track performance and route calls to your team members based on their roles and knowledge. Reach out - Reach more targeted contacts with the auto dialer and improve engagement rates. Supervise - Train and supervise agents in real-time
and obtain precise performance data. Experience our top-rated customer support and free live onboarding sessions designed to maximize your system's potential in the shortest amount of time.

Average Rating: 4.4/5.0

Total Reviews: 348

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How Do G2 Users Rate MightyCall?

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

Who Is the Company Behind MightyCall?

  • Seller: MightyCall
  • Year Founded: 2013
  • HQ Location: San Francisco Bay Area, CA
  • LinkedIn® Page: www.linkedin.com
    50 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Owner, CEO
  • Top Industries: Marketing and Advertising, Real Estate
  • Company Size: 90% Small, 7% Medium

What Do G2 Reviewers Say About MightyCall?

AI-generated summary from verified user reviews

Pros
  • Users find the ease of use of MightyCall makes managing calls seamless across devices, enhancing their experience.
  • Users appreciate the robust customer support of MightyCall, enhancing their overall experience and satisfaction.
  • Users appreciate the robust customer support of MightyCall, enhancing their overall experience and satisfaction.
  • Users highlight the outstanding customer service from MightyCall, consistently providing support and assistance when needed.
  • Users find MightyCall's reliability exceptional, enjoying consistent availability and uninterrupted communication with clients around the clock.
Cons
  • Users face call issues with MightyCall, experiencing dropped calls and inconsistent notifications that hinder timely responses.
  • Users struggle with number issues such as IP lockouts and limited international number availability, affecting reliability.
  • Users find the complexity of MightyCall's app and payment options frustrating, indicating a need for significant improvements.
  • Users experience frequent connection issues with MightyCall, leading to dropped calls and unreliability.
  • Users highlight the missing features in MightyCall, feeling the app lacks essential tools and functionality for effective communication.

What Are Recent G2 Reviews of MightyCall?

What Are G2 Users Discussing About MightyCall?

Ultatel

Ultatel is an intelligent cloud communications platform that brings AI into everyday business conversations across calling, meetings, messaging, and customer interactions. With 50+ advanced features, Ultatel brings all your business communications into one powerful platform built to support organizations at scale. From AI meeting assistant tools that automatically capture summaries and action items, to Intelligent Voice AI Agents that help automate repetitive workflows, Ultatel is designed to help teams communicate more efficiently and stay focused on what matters most. With integrated calling, collaboration, Microsoft Teams connectivity, CRM integrations, and 24/7 live support, Ultatel delivers a modern communications experience built for growing businesses.

Average Rating: 4.7/5.0

Total Reviews: 54

How Do G2 Users Rate Ultatel?

  • Has the product been a good partner in doing business?: 9.4/10 (Category avg: 8.8/10)
  • Phone Calls: 9.6/10 (Category avg: 9.2/10)
  • VOiP Number: 9.6/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 9.3/10 (Category avg: 8.6/10)

Who Is the Company Behind Ultatel?

  • Seller: Ultatel
  • Company Website:
  • Year Founded: 2016
  • HQ Location: Herndon, Virginia
  • LinkedIn® Page: www.linkedin.com
    353 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Hospital & Health Care
  • Company Size: 74% Small, 24% Medium

What Do G2 Reviewers Say About Ultatel?

AI-generated summary from verified user reviews

Pros
  • Users highlight the responsive and knowledgeable support from Ultatel, ensuring smooth and effective assistance when needed.
  • Users value the responsive and knowledgeable customer support of Ultatel, ensuring seamless assistance whenever needed.
  • Users highlight Ultatel's reliability, with stable features and excellent call quality that enhance overall communication.
  • Users commend Ultatel for its ease of use, highlighting intuitive management and seamless communication across departments.
  • Users highlight the excellent support from Ultatel, ensuring quick resolutions and a smooth experience throughout.
Cons
  • Users often find the admin control cumbersome with slow performance and limited self-service options for certain tasks.
  • Users face a complex process during setup, notably with advanced configurations and slow ticket resolutions.
  • Users report experiencing glitches that hinder performance, especially when switching devices or managing the admin dashboard.
  • Users experience significant access issues with Ultatel, hindering productivity and causing integration challenges with other systems.
  • Users sometimes find limited self-management options on Ultatel's portal, preferring more control over their account tasks.

What Are Recent G2 Reviews of Ultatel?

Voiso

Voiso is an AI-powered contact center platform designed to enhance the efficiency and effectiveness of sales and support teams. By leveraging advanced technology, Voiso enables organizations to deliver superior customer interactions at a faster pace. This platform caters to a diverse range of users, from high-growth startups to established global enterprises, all seeking to improve agent productivity, lower operational costs, and expand customer engagement across various channels and regions. The target audience for Voiso includes businesses of all sizes that require a robust solution for managing customer communications. Whether a company is focused on outbound sales campaigns or managing inbound customer support, Voiso provides the necessary tools to streamline operations. The platform is particularly beneficial for teams looking to enhance their performance through automation and data-driven insights, allowing them to focus on building relationships with customers rather than getting bogged down by administrative tasks. Voiso offers a comprehensive suite of features that set it apart in the contact center software category. The AI Predictive Dialer is a standout feature, enabling agents to make up to four times more calls per hour while significantly reducing call abandonment rates. This tool automates the outbound calling process by utilizing real-time data to connect agents with live prospects quickly, minimizing downtime and maximizing productivity. Additionally, the Flow Builder allows users to create customized call flows and interactive voice responses (IVRs) without any coding knowledge, further enhancing operational efficiency. Another key feature is the AI Speech Analytics, which provides instant insights into conversations. With the ability to transcribe calls with high accuracy and perform sentiment analysis, this tool empowers teams to understand customer interactions better and ensure compliance across multiple languages. Voiso’s omnichannel capabilities enable businesses to engage customers through various platforms, including voice, SMS, and social media, all managed from a single interface. This integration fosters improved customer engagement and response times, making it easier for teams to connect with their audience. Real-time dashboards and a mobile app further enhance the user experience by providing teams with immediate access to performance metrics and operational control from anywhere. With customizable dashboards, organizations can monitor key performance indicators and agent activity in real time, supporting informed decision-making. Voiso's commitment to flexibility is evident through its open APIs and enterprise-grade security, ensuring that businesses can scale their contact center operations globally without added complexity. This combination of features makes Voiso a comprehensive solution for modern contact center needs.

Average Rating: 4.8/5.0

Total Reviews: 93

How Do G2 Users Rate Voiso?

  • Has the product been a good partner in doing business?: 8.9/10 (Category avg: 8.8/10)
  • Phone Calls: 10.0/10 (Category avg: 9.2/10)
  • VOiP Number: 10.0/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 10.0/10 (Category avg: 8.6/10)

Who Is the Company Behind Voiso?

  • Seller: Voiso
  • HQ Location: Singapore, Singapore
  • LinkedIn® Page: www.linkedin.com
    90 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Data Analyst, Account Manager
  • Top Industries: Information Technology and Services, Information Services
  • Company Size: 95% Medium, 14% Small

What Do G2 Reviewers Say About Voiso?

AI-generated summary from verified user reviews

Pros
  • Users value the consistent reliability of Voiso, appreciating its seamless omnichannel communication and scalability for growth.
  • Users love the ease of use of Voiso, as it seamlessly integrates multiple communication channels into one interface.
  • Users value the omnichannel workspace of Voiso, integrating multiple communication channels into a single, efficient interface.
  • Users are impressed by the unbelievable AI capabilities of Voiso, transforming call center operations and team outreach.
  • Users highlight the unbelievable AI capabilities of Voiso, significantly enhancing call center efficiency and effectiveness.
Cons
  • Users face complex processes for data export and analytics, requiring significant time and support for effective use.
  • Users find the inadequate reporting features hinder effective data access and understanding, complicating usability.
  • Users find the complexity of Voiso's setup challenging, especially for those less technically inclined.
  • Users find the lack of intuitiveness of Voiso frustrating, especially for non-technical users during setup and training.
  • Users find the learning curve for analytics features steep, requiring significant time and training for effective use.

What Are Recent G2 Reviews of Voiso?

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RingCX

RINGCX PRODUCT DESCRIPTION RingCX is an AI-first Contact Center as a Service (CCaaS) solution that delivers effortless customer experiences before, during, and after every interaction. Recognized with Metrigy's 2026 MetriStar Top Provider Award for CCaaS, RingCX enables businesses to manage human and AI agents, maximize team performance, and improve customer satisfaction from a single omnichannel platform. AGENTIC VOICE AI AND OMNICHANNEL SUPPORT Agentic Voice AI serves as the core of RingCX, delivering automation, real-time assistance, and insights across every interaction. The platform provides comprehensive omnichannel capabilities, supporting voice calls and over 20 digital channels natively. For total operational simplicity, all 20+ digital channels are included under a single license, letting businesses meet customers where they are without complex tier pricing or hidden channel add-on costs. AI-POWERED SELF-SERVICE AND AVA ASSISTANCE RingCX streamlines operations and drives down wait times with purpose-built AI support. The platform utilizes autonomous AI agents, including AI Receptionist (AIR) and AI Representative (AIR Pro), as well as an open ecosystem for IVAs like Cognigy and Omilia, to provide always-on 24/7 self service. For live interactions, the platform deploys AVA Agent Assist and AVA Supervisor Assist to deliver in-the-moment coaching, dynamic compliance guidelines, and instant conversation visibility, ensuring teams resolve complex inquiries efficiently. NATIVE WORKFORCE ENGAGEMENT MANAGEMENT WITH RINGWEM To continuously optimize customer service teams, the platform features RingWEM, a native AI-powered Workforce Engagement Management suite. This integrated toolkit encompasses automated quality management, advanced interaction analytics, and workforce management. By evaluating customer conversations across channels, RingWEM provides actionable operational insights into agent performance, customer sentiment, and operational efficiency. RAPID DEPLOYMENT AND NATIVE CRM INTEGRATIONS Built for rapid implementation, businesses can fully deploy a new RingCX contact center in just a few days. The solution provides industry-leading 99.999% availability to keep remote and hybrid agents reliably connected from anywhere. Competitively priced for mid-market deployments and easy to manage, RingCX integrates natively with the RingEX unified communications platform and major enterprise CRMs to offer an effortless single-pane-of-glass workspace. WHY CHOOSE RINGCX Modern support and sales organizations choose RingCX to eliminate the friction of fragmented legacy systems. By uniting Agentic Voice AI, autonomous tools like AIR, real-time guidance from AVA Agent Assist and AVA Supervisor Assist, built-in workforce optimization via RingWEM, and an all-inclusive omnichannel footprint into one simple deployment, RingCX delivers modern customer service infrastructure that is highly intelligent and exceptionally reliable.

Average Rating: 4.4/5.0

Total Reviews: 152

How Do G2 Users Rate RingCX?

  • Has the product been a good partner in doing business?: 8.7/10 (Category avg: 8.8/10)
  • Phone Calls: 9.4/10 (Category avg: 9.2/10)
  • VOiP Number: 9.2/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 9.6/10 (Category avg: 8.6/10)

Who Is the Company Behind RingCX?

  • Seller: RingCentral
  • Company Website:
  • Year Founded: 1999
  • HQ Location: Belmont, CA
  • LinkedIn® Page: www.linkedin.com
    6,675 employees on LinkedIn®
  • Ownership: NYSE:RNG

Who Uses This Product?

  • Top Industries: Information Technology and Services, Insurance
  • Company Size: 47% Small, 40% Medium

What Do G2 Reviewers Say About RingCX?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of RingCX, finding it accessible and effective for daily operations.
  • Users admire the versatile features of RingCX, appreciating its ease of access and consistent improvements.
  • Users value the excellent customer support from RingCX, making it easy to implement and utilize effectively.
  • Users find the easy setup of RingCX fantastic, enjoying a seamless experience from the start.
  • Users praise the easy implementation of RingCX, highlighting its quick deployment and user-friendly interface.
Cons
  • Users face the issue of using personal phones for work calls, which complicates their work-life balance.
  • Users express concern over having to use their personal phone for work-related calls, affecting their privacy and convenience.
  • Users find limited features of RingCX restrict flexibility, especially for advanced call flows and analytics needs.
  • Users express concerns over missing features, particularly in customization and advanced reporting compared to legacy systems.
  • Users experience slow customer support response times, leading to frustration when resolving urgent communication issues.

What Are Recent G2 Reviews of RingCX?

Bandwidth

With Bandwidth, enterprises deliver exceptional communication experiences everywhere. We enable you to integrate voice, messaging, and emergency services into your communications the way you want. Offering the simplicity of one command center, the Bandwidth platform enables a fully customized employee and customer communications stack with: - Dynamic communication APIs - The most direct-to-carrier integrations in the world - An owned and operated network that reaches 65+ countries - Automation to manage it all and get call quality and message deliverability insights via the Bandwidth app You scale with reliability, compliance expertise, and award-winning support.

Average Rating: 4.4/5.0

Total Reviews: 456

How Do G2 Users Rate Bandwidth?

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

Who Is the Company Behind Bandwidth?

  • Seller: Bandwidth
  • Company Website:
  • Year Founded: 1999
  • HQ Location: Raleigh, NC
  • LinkedIn® Page: www.linkedin.com
    1,243 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: CEO, Owner
  • Top Industries: Telecommunications, Information Technology and Services
  • Company Size: 44% Small, 36% Medium

What Do G2 Reviewers Say About Bandwidth?

AI-generated summary from verified user reviews

Pros
  • Users find the ease of use of Bandwidth's portal and services simplifies management and enhances the experience.
  • Users commend Bandwidth's exceptional customer support and user-friendly portal for seamless number management and implementation.
  • Users value the excellent customer service and helpful account managers at Bandwidth, ensuring reliable support and guidance.
  • Users appreciate the reliability of Bandwidth, noting its easy-to-use portal and excellent customer support, enhancing their experience.
  • Users praise the easy-to-navigate UI of Bandwidth, making number management and porting processes seamless and efficient.
Cons
  • Users express concerns over slow customer service and frustrating ticket management, emphasizing a need for improved support.
  • Users report complex processes in Bandwidth's support and setup, making navigation and access to help challenging.
  • Users face messaging issues with Bandwidth, including complex setups and difficulty managing text registries.
  • Users often experience poor customer support, with slow response times and unhelpful assistance during issues.
  • Users find the time constraints on password updates frustrating, often leading to missed deadlines and complications.

What Are Recent G2 Reviews of Bandwidth?

What Are G2 Users Discussing About Bandwidth?

Grandstream IP Video Phones

Grandstream IP video phones offer an all-in-one communications hub and a multimedia platform solution for any user desktop.

Average Rating: 4.1/5.0

Total Reviews: 13

How Do G2 Users Rate Grandstream IP Video Phones?

  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 8.8/10)
  • Phone Calls: 9.3/10 (Category avg: 9.2/10)
  • VOiP Number: 8.3/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 8.9/10 (Category avg: 8.6/10)

Who Is the Company Behind Grandstream IP Video Phones?

Who Uses This Product?

  • Company Size: 46% Medium, 38% Small

What Are Recent G2 Reviews of Grandstream IP Video Phones?

What Are G2 Users Discussing About Grandstream IP Video Phones?

Ooma Office

Ooma Office is an award-winning business communication solution designed to grow with your business. Whether you have 2 or 200 employees, Ooma delivers flexible, scalable voice and collaboration tools that are easy to manage. Ooma Office customers save an average of 50% per line compared to competing services. With unlimited line expansion, a simple do-it-yourself setup, and no contracts or long-term commitments, Ooma Office VoIP phone service makes it easy to scale at your own pace. Ooma offers 100+ powerful business phone features to support a seamless communications experience. Capabilities like AI Transcriptions, Virtual Receptionist, videoconferencing, and CRM integrations help teams collaborate more effectively and deliver exceptional customer experiences.

Average Rating: 4.5/5.0

Total Reviews: 130

How Do G2 Users Rate Ooma Office?

  • Has the product been a good partner in doing business?: 9.1/10 (Category avg: 8.8/10)
  • Phone Calls: 9.2/10 (Category avg: 9.2/10)
  • VOiP Number: 9.4/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 9.0/10 (Category avg: 8.6/10)

Who Is the Company Behind Ooma Office?

  • Seller: Ooma, Inc.
  • Company Website:
  • Year Founded: 2004
  • HQ Location: Sunnyvale, California
  • LinkedIn® Page: www.linkedin.com
    673 employees on LinkedIn®
  • Ownership: NYSE: OOMA

Who Uses This Product?

  • Who Uses This: Owner, President
  • Top Industries: Insurance, Construction
  • Company Size: 99% Small

What Do G2 Reviewers Say About Ooma Office?

AI-generated summary from verified user reviews

Pros
  • Users highlight the intuitive ease of use of Ooma Office, enhancing remote work and streamlining communication efficiently.
  • Users appreciate the easy setup of Ooma Office, making it perfect for intuitive and efficient remote work.
  • Users appreciate the versatile features of Ooma Office, enhancing efficiency and streamlining communication for small businesses.
  • Users value the excellent customer service of Ooma Office, enjoying responsive support and dedicated assistance for their business needs.
  • Users find Ooma Office to be intuitive and easy to use, enhancing productivity and user experience seamlessly.
Cons
  • Users face frequent service issues with Ooma Office and find it nearly impossible to reach customer support.
  • Users note the high cost of Ooma Office compared to some no-frills services, affecting overall value perception.
  • Users feel that Ooma Office has a higher price point compared to simpler alternatives, impacting overall value perception.

What Are Recent G2 Reviews of Ooma Office?

What Are G2 Users Discussing About Ooma Office?

Freshcaller

Freshdesk Contact Center (Formerly Freshcaller) is a simple and reliable cloud-based contact center software that helps businesses connect with customers in an affordable way. With phone numbers in 90+ countries, Freshdesk Contact Center lets customers set up their contact center in a few easy steps, and with zero phone hardware. Freshdesk Contact Center integrates with several CRM and Helpdesk tools, enabling sales and support teams to work seamlessly. With powerful reporting and analytics, admins can get real-time insights into their customer experience as well as agent productivity. WithFreshdesk Contact Center (Formerly Freshcaller) , agents can take calls on their desktops, laptops, or phone (both Android and iOS), to create a fully remote but connected contact center. As business needs change, admins can add agent licenses, purchase additional numbers, add phone credits, and upgrade the pricing plan. Freshdesk Contact Center (Formerly Freshcaller) offers five pricing plans that are tailored to meet different calling needs. Freshdesk Contact Center (Formerly Freshcaller) by Freshworks is a truly modern and reliable phone system that is trusted by over 7000+ customers worldwide.

Average Rating: 4.1/5.0

Total Reviews: 127

How Do G2 Users Rate Freshcaller?

  • Has the product been a good partner in doing business?: 8.4/10 (Category avg: 8.8/10)
  • Phone Calls: 9.2/10 (Category avg: 9.2/10)
  • VOiP Number: 8.9/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 8.8/10 (Category avg: 8.6/10)

Who Is the Company Behind Freshcaller?

  • Seller: Freshworks
  • Year Founded: 2010
  • HQ Location: San Mateo, CA
  • LinkedIn® Page: www.linkedin.com
    7,783 employees on LinkedIn®
  • Ownership: NASDAQ: FRSH
  • Phone: +1 (866) 832-3090

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 69% Small, 25% Medium

What Do G2 Reviewers Say About Freshcaller?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the simple and clean UI of Freshcaller, making it easy to use and set up.
  • Users value the automation features of Freshcaller, enhancing efficiency and ensuring timely customer interactions.
  • Users value the call recording feature of Freshcaller, enhancing their overall communication efficiency and experience.
  • Users value the simple and clean UI of Freshcaller, enhancing their communication experience effortlessly.
  • Users find the dial pad and recording features of Freshcaller valuable for a seamless calling experience.
Cons
  • Users feel the lack of features in Freshcaller limits functionality and hampers their overall experience.
  • Users feel the lack of detailed contact information limits the usefulness of Freshcaller for managing interactions effectively.
  • Users find the lack of detailed contact information frustrating, particularly missing recent call notes for better follow-up.
  • Users find the lack of detailed contact information frustrating, missing important features like recent call notes.
  • Users report poor customer support, particularly slow response times affecting urgent issue resolutions with Freshcaller.

What Are Recent G2 Reviews of Freshcaller?

What Are G2 Users Discussing About Freshcaller?

JustCall

JustCall is the only AI-powered business communication platform that brings calls, texts, email, and WhatsApp together in one place. It helps customer-facing teams work more efficiently, respond faster, and connect better with prospects and customers. 6,000+ businesses worldwide use JustCall to: - Manage all customer conversations from a single platform - Automate routine tasks and workflows - Get real-time AI insights to improve conversations - Ensure 24/7 coverage with inbound AI Voice Agents (outbound support coming soon) Key features: - Calling: Global phone numbers, inbound/outbound calling, smart routing, auto/predictive/power dialers - Messaging: SMS & MMS, workflows, bots, shared WhatsApp inbox, multi-level IVR, shared email inbox - AI tools: Real-time agent assist, AI coaching, sentiment analysis, call scoring, live monitoring, SMS Copilot, inbound AI Voice Agent - Integrations & collaboration: 100+ CRM integrations, collaborative team workspace

Average Rating: 4.3/5.0

Total Reviews: 2,367

How Do G2 Users Rate JustCall?

  • Has the product been a good partner in doing business?: 8.6/10 (Category avg: 8.8/10)
  • Phone Calls: 9.0/10 (Category avg: 9.2/10)
  • VOiP Number: 8.8/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 7.6/10 (Category avg: 8.6/10)

Who Is the Company Behind JustCall?

  • Seller: Saas Labs
  • Company Website:
  • Year Founded: 2016
  • HQ Location: Palo Alto, California
  • LinkedIn® Page: www.linkedin.com
    402 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: CEO, Account Executive
  • Top Industries: Computer Software, Financial Services
  • Company Size: 59% Small, 31% Medium

What Do G2 Reviewers Say About JustCall?

AI-generated summary from verified user reviews

Pros
  • Users find JustCall to have a user-friendly interface, simplifying call management and enhancing overall productivity.
  • Users value the seamless organization of calls and notes in JustCall, enhancing productivity and communication efficiency.
  • Users find JustCall's organization and centralization of communication efficient, streamlining work and enhancing productivity.
  • Users appreciate the centralized call management of JustCall, making communication and follow-ups organized and efficient.
  • Users value the user-friendly and reliable calling features of JustCall, enhancing communication and organization effortlessly.
Cons
  • Users experience call issues with delays, connectivity problems, and difficulty managing call logs effectively.
  • Users experience inconsistent call quality with JustCall, affecting communication and overall user satisfaction.
  • Users experience connection issues with JustCall, impacting call quality and leading to disruption in communication.
  • Users experience poor call quality with JustCall, facing issues like dropped calls and unreliable connections during important conversations.
  • Users experience slow loading times, particularly when navigating extensive call logs, which hinders quick access and efficiency.

What Are Recent G2 Reviews of JustCall?

Twilio

Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world. Twilio enables companies to use communications and data to add intelligence and security to every step of the customer journey, from sales to marketing to growth, customer service and many more engagement use cases in a flexible, programmatic way. Across 180 countries, millions of developers and hundreds of thousands of businesses use Twilio to create magical experiences for their customers.

Average Rating: 4.1/5.0

Total Reviews: 487

How Do G2 Users Rate Twilio?

  • Has the product been a good partner in doing business?: 8.0/10 (Category avg: 8.8/10)
  • Phone Calls: 9.5/10 (Category avg: 9.2/10)
  • VOiP Number: 8.3/10 (Category avg: 9.1/10)

Who Is the Company Behind Twilio?

  • Seller: Twilio
  • Company Website:
  • Year Founded: 2008
  • HQ Location: San Francisco, CA
  • LinkedIn® Page: www.linkedin.com
    7,801 employees on LinkedIn®
  • Ownership: NYSE: TWLO

Who Uses This Product?

  • Who Uses This: CEO, Software Engineer
  • Top Industries: Computer Software, Information Technology and Services
  • Company Size: 51% Small, 31% Medium

What Do G2 Reviewers Say About Twilio?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Twilio, enabling seamless communication automation without complexity.
  • Users value Twilio for its easy integrations, enhancing workflow automation with seamless communication solutions.
  • Users appreciate Twilio's easy integrations with platforms like Salesforce, streamlining communication automation effectively.
  • Users highlight the easy setup of Twilio, enabling quick integration of SMS functionalities for seamless communication.
  • Users appreciate Twilio's seamless API integration, enhancing communication workflows with flexibility and reliability.
Cons
  • Users find Twilio expensive as costs can escalate rapidly, especially with high message volumes and usage scaling.
  • Users experience poor customer support, noting slow response times and a frustrating experience when needing assistance.
  • Users struggle with difficult configuration that can be overwhelming for non-technical teams during initial setup.
  • Users find the complex setup challenging, especially for non-technical teams trying to configure advanced features.
  • Users find the technical knowledge required challenging, especially for non-technical teams managing complex setups.

What Are Recent G2 Reviews of Twilio?

What Are G2 Users Discussing About Twilio?

SalesCaptain

SalesCaptain is an all-in-one communication platform with a chat based AI agent builder, designed for modern businesses. It unifies phone calls, texting, webchat, and social media messaging into a single collaborative inbox. With SalesCaptain, you can easily create AI-powered phone and text agents to handle calls, answer queries, route leads, filter spam, and automate tasks — all without any technical expertise. SalesCaptain also includes a suite of built-in business apps for managing reviews, appointments, lead stages, team leaderboards, and more — giving you everything you need to streamline customer engagement and team performance in one platform. Build drag-and-drop automations, connect with 50+ popular platforms like HubSpot, Booker, Clio, and ServiceFusion, or go deeper with API, webhooks, and Zapier support. Whether you're a startup or a multi-location enterprise, SalesCaptain helps you scale communication and customer engagement with ease.

Average Rating: 4.4/5.0

Total Reviews: 308

How Do G2 Users Rate SalesCaptain?

  • Has the product been a good partner in doing business?: 9.4/10 (Category avg: 8.8/10)

Who Is the Company Behind SalesCaptain?

Who Uses This Product?

  • Who Uses This: Operations Manager, Marketing Manager
  • Top Industries: Retail, Marketing and Advertising
  • Company Size: 69% Small, 30% Medium

What Do G2 Reviewers Say About SalesCaptain?

AI-generated summary from verified user reviews

Pros
  • Users value the automation features of SalesCaptain for enhancing lead conversion and streamlining team communication.
  • Users value the organized communication in SalesCaptain, enhancing collaboration and improving lead management for the team.
  • Users appreciate the ease of use of SalesCaptain, enhancing coordination and communication across teams effortlessly.
  • Users value the organization and automation provided by SalesCaptain, ensuring seamless communication and lead management.
  • Users appreciate the improved communication from SalesCaptain, facilitating organized messaging and seamless team collaboration.
Cons
  • Users face a steep learning curve with SalesCaptain, requiring significant effort for initial setup and customization.
  • Users find the time-consuming setup of SalesCaptain to be a significant challenge before enjoying its benefits.
  • Users express concerns over limited reporting capabilities, wishing for more flexibility in monitoring performance metrics.
  • Users find the limited customization challenging, requiring significant setup to align with their specific workflows.
  • Users note a modest learning curve, requiring time for setup and adjustments before fully benefiting from SalesCaptain.

What Are Recent G2 Reviews of SalesCaptain?

Streams.AI

Streams.AI by PanTerra Networks is a unified, AI-powered cloud-based communications platform designed to help businesses streamline communication and engagement efforts. The solution integrates voice, video, messaging, file sharing, and contact center functionalities into a single, user-friendly interface. Streams.AI allows teams of all sizes to connect and collaborate seamlessly, eliminating the need to juggle multiple applications. Streams.AI encompasses businesses across various sectors, particularly those in industries that prioritize security and uptime, such as healthcare, finance, and legal. These organizations often require robust communication solutions that can adapt to their evolving needs. Streams.AI is designed to support these requirements, offering features that enhance productivity and facilitate effective collaboration from any device. Streams.AI offers advanced contact center features, such as auto-attendant routing and call analytics, which help organizations manage customer interactions more effectively. Administrative controls are built into the system, allowing IT teams to customize settings and monitor usage, ensuring that the platform aligns with organizational policies and compliance requirements. One of the standout aspects of Streams.AI is its commitment to security and reliability. With built-in compliance measures and 24/7 support, PanTerra Networks provides a managed communications experience that businesses can trust. This level of support is particularly crucial for industries that handle sensitive information, as it ensures that communications remain secure and uninterrupted. Stream.AI's scalability means that it can grow alongside any business, accommodating increasing demands without compromising performance. Security and reliability are standout aspects of Streams.AI, as the platform incorporates built-in compliance measures and offers 24/7 support. PanTerra Networks provides a managed communications experience that businesses can trust. This commitment to security ensures that communications remain secure and uninterrupted, fostering confidence and engagement among users. By integrating multiple functionalities into a single customer engaging platform, Streams.AI simplifies workflows and fosters a more connected and efficient work environment.

Average Rating: 4.3/5.0

Total Reviews: 38

How Do G2 Users Rate Streams.AI?

  • Has the product been a good partner in doing business?: 8.9/10 (Category avg: 8.8/10)
  • Phone Calls: 9.7/10 (Category avg: 9.2/10)
  • VOiP Number: 7.8/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 9.4/10 (Category avg: 8.6/10)

Who Is the Company Behind Streams.AI?

  • Seller: PanTerra Networks
  • Company Website:
  • Year Founded: 2001
  • HQ Location: San Jose, California
  • LinkedIn® Page: www.linkedin.com
    134 employees on LinkedIn®
  • Phone: (800) 805-0558

Who Uses This Product?

  • Company Size: 53% Small, 30% Medium

What Do G2 Reviewers Say About Streams.AI?

AI-generated summary from verified user reviews

Pros
  • Users commend the exceptional reliability of Streams.AI, ensuring seamless communication and outstanding service delivery.
  • Users commend the exceptional reliability and organization of Streams.AI's cloud storage, enhancing patient care delivery anywhere.
  • Users highlight the ease of use of Streams.AI, enhancing their overall experience in delivering patient care.
  • Users praise the high quality of Streams.AI, noting exceptional reliability and remarkable service delivery from anywhere.
  • Users value the flexibility and efficiency of Streams.AI, enhancing patient care from any location while balancing work-life.
Cons
  • The difficult interface of Streams.AI frustrates users, making navigation and admin tasks less intuitive and efficient.
  • Users experience inconveniences with the admin portal and message management, leading to frustration and inefficiencies.
  • Users find the admin portal unintuitive, leading to frustration when making changes to extensions due to complex processes.
  • Users find the admin control interface unintuitive, causing frustration when making infrequent changes to extensions.
  • Users find the complex process of the admin portal frustrating and can forget how to make changes easily.

What Are Recent G2 Reviews of Streams.AI?

What Are G2 Users Discussing About Streams.AI?

Natterbox

Natterbox helps you capture revenue from every conversation, with an AI contact centre built inside Salesforce. In G2’s Contact Center category, reviewers rate Natterbox 9.4 out of 10 for quality of support and 9.5 for ease of doing business. Natterbox runs its own global phone network and AI, offering an end-to-end solution for global businesses looking to capture or protect revenue through customer communications. With Natterbox, your team and AI agents handle calls, SMS, WhatsApp and chat at any hour, inbound and outbound. Voice AI agents take the routine calls, so you handle peaks without hiring for them. Everything is recorded, scored and written to Salesforce, so every conversation drives your competitive advantage. With one supplier, you have one team to call. Secret Escapes’ previous AI vendor stalled for over a year without going live, and Natterbox went live in six weeks. At Danone, AI agents answered 32,000+ calls in three months, and Secret Escapes, with 80+ agents, deflects 30% of calls with AI. SALESFORCE NATIVE CONTACT CENTRE Natterbox is for Salesforce teams with high call volumes. It is built natively in Salesforce, so nothing waits to sync, and you build routing and traditional or AI-powered IVR with clicks, not code. If you need voice in Salesforce, Natterbox supplies the calling, routing and AI agents. Danone, PRS for Music and Financial Lease see 100% of their calls in Salesforce, and Accquis logged 20% more sales opportunities. AI VOICE AGENTS AND CHATBOTS Voice AI agents answer routine calls in your brand’s voice. Callers say what they need, so there is no IVR menu to press through, and a call that needs a person reaches your team with a live summary. At We Buy Any Home, AI agents handle 81% of calls end to end. AI agents also make calls when a Salesforce record changes, such as a new lead or a renewal date, and write the result to the record. INBOUND AND OUTBOUND AI agents and your team follow the same routing rules, by skill and priority and on live Salesforce data, with callback from the queue. Your team can click to dial from any Salesforce record, show a local number, run an outbound dialler and send SMS and WhatsApp messages. QUALITY ASSURANCE, COACHING, AND COMPLIANCE AI Advisor scores 100% of calls against your own criteria and saves the score, transcript and summary on the Salesforce call record. Each agent gets coaching recommendations from their own calls. Transcripts give you speech analytics on every conversation, and competitor mentions, lead source and intent are written to the record. National Dental Care analyses 100% of calls and saves managers 20 hours a month on manual quality assurance. Call recording with pause and resume, compliance announcements and PCI card payments protect each call, and callers key in card details that the agent never hears. Christies Direct takes card payments with Natterbox PCI Payments.

Average Rating: 4.4/5.0

Total Reviews: 143

How Do G2 Users Rate Natterbox?

  • Has the product been a good partner in doing business?: 9.1/10 (Category avg: 8.8/10)
  • Phone Calls: 9.3/10 (Category avg: 9.2/10)
  • VOiP Number: 8.7/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 8.7/10 (Category avg: 8.6/10)

Who Is the Company Behind Natterbox?

  • Seller: Natterbox Limited
  • Company Website:
  • Year Founded: 2010
  • HQ Location: London, England
  • LinkedIn® Page: www.linkedin.com
    122 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Salesforce Administrator
  • Top Industries: Financial Services, Staffing and Recruiting
  • Company Size: 58% Medium, 31% Small

What Do G2 Reviewers Say About Natterbox?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the helpful customer support from Natterbox, enhancing their experience and setup process significantly.
  • Users appreciate the seamless integration of Natterbox into Salesforce, enhancing usability and configurability significantly.
  • Users commend the exceptional reliability of Natterbox, experiencing zero outages for seamless communication and productivity.
  • Users value the native Salesforce integration of Natterbox, boosting productivity and simplifying operations effectively.
  • Users value the call recording capabilities of Natterbox, enhancing service quality and efficiency within Salesforce.
Cons
  • Users note call quality issues with Natterbox, expressing a desire for improvements in connection stability and AI integration.
  • Users find the missing features of Natterbox hinder usability, such as lack of call management and integration issues.
  • Users experience poor customer support with Natterbox, facing issues like unprovisioned phones and insufficient assistance.
  • Users face call limitations with Natterbox, including no hold option and complexities in call management.
  • Users find Natterbox's complex setup and outdated interface challenging, particularly for those new to AI projects.

What Are Recent G2 Reviews of Natterbox?

What Are G2 Users Discussing About Natterbox?

Calilio

Calilio is a cloud-based business phone system and call center software built for sales, support, and remote teams. It helps businesses move away from traditional desk phones and on-site PBX hardware by enabling teams to make and receive calls over the internet using VoIP technology from desktop, web browser, iOS, and Android devices. With Calilio, businesses can buy or port virtual phone numbers, including local, mobile, and toll-free numbers, from 100+ countries and manage customer communications from a shared workspace. Teams can handle calls, SMS, MMS, voicemail, notes, tags, recordings, and call history without switching between disconnected tools. Calilio supports inbound call management with features such as IVR, call forwarding, business hours, voicemail, call transfer, number sharing, and call routing. Its Ring Strategy allows businesses to define how incoming calls are distributed across team members based on availability, team structure, and call-handling requirements, helping teams manage call flow more effectively. For outbound sales and customer outreach, Calilio offers a power dialer, contact import, campaign setup, custom caller ID, click-to-call, call disposition, notes, tags, recordings, and analytics. Teams can also use Bulk SMS to send messages to multiple contacts for announcements, reminders, follow-ups, campaigns, and other customer communications directly from the same business communication platform. Calilio also introduces an AI Voice Agent that uses artificial intelligence to support customer conversations and automate parts of call handling. It can assist businesses with sales, customer support, and call center workflows while helping reduce manual call-handling effort and improve response speed. The Standard plan includes up to 10 minutes of AI Voice Agent usage per user per month, while the Premium plan includes up to 100 minutes per user per month. Calilio integrates with KudosCRM & HubSpot to connect business calling with customer relationship management. Call activity can be connected with customer records, helping sales and support teams keep conversations, customer information, and follow-up activities in context. This reduces the need to manage calling activity separately and gives teams a clearer view of customer interactions throughout the sales and support process. Managers and supervisors can use live call monitoring, call whispering, call barge-in, call recording, and analytics to review team performance and support agents during important conversations. Calilio’s AI-powered call reports help teams review conversations faster with call transcription, summaries, sentiment analysis, reason for call, and call conclusion. Available across Web, iOS, and Android, Calilio gives teams the flexibility to manage business communication from desktops, browsers, and mobile devices. Users can make and receive calls, access messages, manage virtual numbers, and review call activity from the device that best fits their workflow.

Average Rating: 4.7/5.0

Total Reviews: 94

How Do G2 Users Rate Calilio?

  • Has the product been a good partner in doing business?: 8.2/10 (Category avg: 8.8/10)
  • Phone Calls: 9.8/10 (Category avg: 9.2/10)
  • VOiP Number: 9.7/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 6.3/10 (Category avg: 8.6/10)

Who Is the Company Behind Calilio?

  • Seller: Calilio
  • Year Founded: 2023
  • HQ Location: FAR EAST FINANCE BUILDING SINGAPORE (048545)
  • LinkedIn® Page: www.linkedin.com
    50 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Content Writer
  • Top Industries: Writing and Editing, Computer Software
  • Company Size: 93% Small, 10% Medium

What Do G2 Reviewers Say About Calilio?

AI-generated summary from verified user reviews

Pros
  • Users praise the ease of use of Calilio, highlighting its intuitive interface and quick implementation.
  • Users praise Calilio for its affordable and reliable VoIP services, enhancing connectivity with friends, family, and colleagues.
  • Users value the responsive 24/7 customer service of Calilio, ensuring prompt support for any issues encountered.
  • Users find Calilio's affordable pricing impressive, offering reliable service and excellent call quality for a low cost.
  • Users commend Calilio's responsive customer support, appreciating quick resolutions and 24/7 availability for their needs.
Cons
  • Users find the lack of video conferencing features in Calilio limiting for their communication needs.
  • Users find the limited availability of virtual numbers in some regions a drawback for OTP and verification services.
  • Users feel the high cost of Calilio is unjustified, especially given issues with service and misleading information.
  • Users express concern over limited features in Calilio, lacking essential tools like CRM integrations and detailed analytics.
  • Users experience connection issues that affect call quality during low bandwidth moments, leading to inconsistent performance.

What Are Recent G2 Reviews of Calilio?

Fusion Connect: Modern Connectivity and Communications Solutions

Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business. We use our technical expertise and industry know-how to build the ‘right-fit’ communications and collaboration solutions for our customers, be it managed connectivity and network access, UCaaS, CCaaS, SD-WAN, managed security, or Microsoft Teams. Fusion Connect, a Morgan Stanley Company, takes a unique customer-first approach to building, implementing, and supporting customized solutions with uptime performance backed by an industry-leading service guarantee.

Average Rating: 4.3/5.0

Total Reviews: 77

How Do G2 Users Rate Fusion Connect: Modern Connectivity and Communications Solutions?

  • Has the product been a good partner in doing business?: 8.5/10 (Category avg: 8.8/10)
  • Phone Calls: 8.6/10 (Category avg: 9.2/10)
  • VOiP Number: 8.3/10 (Category avg: 9.1/10)
  • Desk-to-Desk Calls: 8.3/10 (Category avg: 8.6/10)

Who Is the Company Behind Fusion Connect: Modern Connectivity and Communications Solutions?

  • Seller: Fusion Connect
  • Company Website:
  • Year Founded: 2003
  • HQ Location: Atlanta, Georgia, United States
  • LinkedIn® Page: www.linkedin.com
    1,621 employees on LinkedIn®
  • Ownership: NASDAQ:FSNN

Who Uses This Product?

  • Top Industries: Non-Profit Organization Management, Restaurants
  • Company Size: 36% Medium, 35% Small

What Do G2 Reviewers Say About Fusion Connect: Modern Connectivity and Communications Solutions?

AI-generated summary from verified user reviews

Pros
  • Users value the ease of use of Fusion Connect, enhancing communication management and simplifying the transition process.
  • Users appreciate the responsive and effective customer support of Fusion Connect, enhancing their communication management experience.
  • Users value the ease of use of Fusion Connect, finding it simple to set up and navigate seamlessly.
  • Users value the remarkable reliability of Fusion Connect, with seamless transitions and excellent uptime for business operations.
  • Users commend the excellent customer service of Fusion Connect, noting quick responses and dedicated support teams.
Cons
  • Users experience poor customer support, with stalled implementations and inconsistent communication causing frustration and unresolved issues.
  • Users face inconsistent communication and unresolved issues, leading to frustration during the implementation process of Fusion Connect.
  • Users experience billing issues with Fusion Connect, facing unclear communication and unexpected fees despite service non-delivery.
  • Users face communication issues and delays in account management, impacting service delivery and overall satisfaction.
  • Users find processes overly complex, especially in customer support and billing, hindering self-service capabilities.

What Are Recent G2 Reviews of Fusion Connect: Modern Connectivity and Communications Solutions?

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