Quick Overview
- 1#1: RingCentral - Delivers comprehensive cloud-based UCaaS with voice, video, messaging, and AI-powered features for business communications.
- 2#2: Nextiva - Offers reliable VoIP phone systems with unlimited calling, video conferencing, and exceptional customer support for SMBs.
- 3#3: Zoom Phone - Provides cloud phone solutions integrated with video meetings, SMS, and global calling for seamless hybrid work.
- 4#4: 8x8 - Combines voice, video, chat, and contact center capabilities in a secure, AI-enhanced cloud platform for businesses.
- 5#5: Vonage Business Communications - Powers business phone systems with VoIP, video, messaging, and API integrations for scalable communication.
- 6#6: Dialpad - AI-driven cloud phone system featuring real-time transcription, analytics, and contact center tools for modern teams.
- 7#7: Ooma Office - Affordable VoIP business phone service with virtual receptionist, mobile apps, and unlimited US calling.
- 8#8: GoTo Connect - Unified communications platform offering phone, video, messaging, and SMS for distributed workforces.
- 9#9: Microsoft Teams Phone - Integrates PSTN calling, voicemail, and auto attendants into Microsoft Teams for enterprise collaboration.
- 10#10: Google Voice - Cloud-based phone system within Google Workspace providing calling, texting, and voicemail for small businesses.
Our rankings prioritize tools that excel in critical areas: robust feature sets (including voice, video, messaging, and AI-driven capabilities), consistent performance and security, intuitive user experience, and tailored value for businesses of varying sizes—ensuring each entry offers tangible benefits for real-world use.
Comparison Table
This comparison table examines top business phone systems software, featuring RingCentral, Nextiva, Zoom Phone, 8x8, Vonage Business Communications, and more, to help readers understand core features, scalability, and usability. By outlining call handling, integration options, and cost structures, it simplifies the process of finding software that aligns with specific business needs.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | RingCentral Delivers comprehensive cloud-based UCaaS with voice, video, messaging, and AI-powered features for business communications. | enterprise | 9.5/10 | 9.7/10 | 9.2/10 | 9.0/10 |
| 2 | Nextiva Offers reliable VoIP phone systems with unlimited calling, video conferencing, and exceptional customer support for SMBs. | enterprise | 9.1/10 | 9.3/10 | 9.0/10 | 8.8/10 |
| 3 | Zoom Phone Provides cloud phone solutions integrated with video meetings, SMS, and global calling for seamless hybrid work. | enterprise | 8.7/10 | 8.5/10 | 9.2/10 | 8.0/10 |
| 4 | 8x8 Combines voice, video, chat, and contact center capabilities in a secure, AI-enhanced cloud platform for businesses. | enterprise | 8.6/10 | 9.1/10 | 8.2/10 | 8.0/10 |
| 5 | Vonage Business Communications Powers business phone systems with VoIP, video, messaging, and API integrations for scalable communication. | enterprise | 8.6/10 | 9.1/10 | 8.3/10 | 8.0/10 |
| 6 | Dialpad AI-driven cloud phone system featuring real-time transcription, analytics, and contact center tools for modern teams. | enterprise | 8.6/10 | 9.2/10 | 8.5/10 | 8.0/10 |
| 7 | Ooma Office Affordable VoIP business phone service with virtual receptionist, mobile apps, and unlimited US calling. | enterprise | 8.3/10 | 8.2/10 | 8.6/10 | 8.8/10 |
| 8 | GoTo Connect Unified communications platform offering phone, video, messaging, and SMS for distributed workforces. | enterprise | 8.6/10 | 9.1/10 | 8.4/10 | 8.2/10 |
| 9 | Microsoft Teams Phone Integrates PSTN calling, voicemail, and auto attendants into Microsoft Teams for enterprise collaboration. | enterprise | 8.7/10 | 9.2/10 | 8.0/10 | 8.3/10 |
| 10 | Google Voice Cloud-based phone system within Google Workspace providing calling, texting, and voicemail for small businesses. | enterprise | 7.6/10 | 7.1/10 | 9.2/10 | 8.4/10 |
Delivers comprehensive cloud-based UCaaS with voice, video, messaging, and AI-powered features for business communications.
Offers reliable VoIP phone systems with unlimited calling, video conferencing, and exceptional customer support for SMBs.
Provides cloud phone solutions integrated with video meetings, SMS, and global calling for seamless hybrid work.
Combines voice, video, chat, and contact center capabilities in a secure, AI-enhanced cloud platform for businesses.
Powers business phone systems with VoIP, video, messaging, and API integrations for scalable communication.
AI-driven cloud phone system featuring real-time transcription, analytics, and contact center tools for modern teams.
Affordable VoIP business phone service with virtual receptionist, mobile apps, and unlimited US calling.
Unified communications platform offering phone, video, messaging, and SMS for distributed workforces.
Integrates PSTN calling, voicemail, and auto attendants into Microsoft Teams for enterprise collaboration.
Cloud-based phone system within Google Workspace providing calling, texting, and voicemail for small businesses.
RingCentral
enterpriseDelivers comprehensive cloud-based UCaaS with voice, video, messaging, and AI-powered features for business communications.
RingSense AI for conversation intelligence, including real-time coaching, transcription, and sentiment analysis.
RingCentral is a leading cloud-based unified communications platform that provides business phone systems, video conferencing, team messaging, and fax services all in one app. It supports VoIP calling with advanced features like AI-powered call transcription, analytics, and seamless integrations with CRM tools and productivity apps such as Microsoft Teams and Salesforce. Designed for scalability, it caters to businesses of all sizes, enabling remote and hybrid teams to communicate effectively without on-premises hardware.
Pros
- Comprehensive all-in-one UCaaS with voice, video, messaging, and AI tools
- Extensive integrations with over 300 apps including Salesforce and Microsoft 365
- High call quality, global reach, and robust security features
Cons
- Higher pricing tiers can be expensive for very small teams
- Advanced features have a moderate learning curve
- Occasional dependency on internet quality for optimal performance
Best For
Mid-sized to enterprise businesses seeking a scalable, feature-rich unified communications solution for remote and hybrid teams.
Pricing
Starts at $20/user/month for Core plan (unlimited calls, messaging), $25 for Advanced (video, webinars), $35 for Ultra (AI analytics); billed annually.
Nextiva
enterpriseOffers reliable VoIP phone systems with unlimited calling, video conferencing, and exceptional customer support for SMBs.
AI-driven conversation intelligence and real-time analytics for optimizing customer interactions
Nextiva is a cloud-based unified communications platform offering VoIP phone systems, video conferencing, team messaging, SMS/MMS, faxing, and advanced call management for businesses. It provides unlimited domestic calling and texting, AI-powered analytics, CRM integrations, and robust security features to enhance productivity and customer engagement. With 99.999% uptime reliability, it's designed for scalability across small to enterprise-level organizations.
Pros
- Unlimited US/Canada calling and texting on all plans
- 24/7 award-winning customer support with white-glove onboarding
- Seamless integrations with CRM tools like Salesforce and Microsoft 365
Cons
- Higher cost for enterprise features and add-ons
- Limited international minutes on lower-tier plans
- Occasional mobile app connectivity issues reported by users
Best For
Medium-sized businesses needing a scalable, all-in-one VoIP solution with strong analytics and dedicated support.
Pricing
Essential ($23.95/user/mo), Professional ($27.95/user/mo), Enterprise ($37.95/user/mo) billed annually; custom enterprise pricing available.
Zoom Phone
enterpriseProvides cloud phone solutions integrated with video meetings, SMS, and global calling for seamless hybrid work.
One-click escalation from phone calls to Zoom video meetings with shared context
Zoom Phone is a cloud-based VoIP phone system integrated with the Zoom video platform, offering businesses reliable voice calling, SMS/MMS messaging, and advanced call handling features like auto-receptionists, queues, and voicemail-to-text transcription. It enables seamless transitions from phone calls to video meetings and provides analytics for call performance. Designed for scalability, it supports global numbers and works across desktop, mobile, and desk phones.
Pros
- Seamless integration with Zoom Meetings for unified communications
- High call quality and reliability with global number availability
- Intuitive interface with quick setup and mobile/desktop apps
Cons
- Higher pricing for advanced features and international calling
- Limited native integrations outside the Zoom ecosystem
- Some enterprise PBX capabilities require add-ons or partners
Best For
Businesses already using Zoom that need integrated voice and video communications without complex setup.
Pricing
Starts at $10/user/month (Metered) or $15/user/month (Unlimited domestic), plus ~$5-10 per phone number; enterprise plans custom.
8x8
enterpriseCombines voice, video, chat, and contact center capabilities in a secure, AI-enhanced cloud platform for businesses.
AI-powered conversation intelligence with real-time coaching and automated quality management.
8x8 is a cloud-based unified communications platform offering VoIP phone systems, HD video conferencing, team messaging, SMS/MMS, and integrated contact center solutions for businesses. It provides global calling with local numbers, advanced call routing, analytics, and CRM integrations like Salesforce and Microsoft Teams. The platform emphasizes scalability, security, and AI-powered insights to enhance customer and employee experiences.
Pros
- Comprehensive UCaaS suite with voice, video, chat, and contact center in one platform
- Strong global reach with 99.999% uptime SLA and AI analytics
- Seamless integrations with major CRMs and productivity tools
Cons
- Pricing can escalate quickly for advanced features and add-ons
- Admin interface and mobile app have occasional usability quirks
- Customer support response times vary, especially for smaller accounts
Best For
Mid-sized businesses and enterprises needing scalable, feature-rich cloud communications with contact center capabilities.
Pricing
Starts at $24/user/month for basic X2 phone service; X4 full UCaaS at $44/user/month; contact center from $115/agent/month (billed annually, minimums apply).
Vonage Business Communications
enterprisePowers business phone systems with VoIP, video, messaging, and API integrations for scalable communication.
Vonage AI Studio for building custom AI agents and automating call workflows
Vonage Business Communications is a cloud-based unified communications as a service (UCaaS) platform offering voice calling, video conferencing, team messaging, and SMS/MMS for businesses of all sizes. It provides scalable plans with features like AI-driven call analytics, desktop/mobile apps, and extensive integrations with CRM tools such as Salesforce and Microsoft Teams. The service emphasizes reliability through its global SuperNetwork, supporting remote and hybrid workforces with seamless communication tools.
Pros
- Robust feature set including AI analytics and unlimited domestic calling
- Excellent integrations with 100+ apps like Salesforce and Slack
- Scalable for SMBs to enterprises with strong mobile/desktop support
Cons
- Premium features and add-ons can increase costs significantly
- Occasional reports of call quality issues in high-traffic scenarios
- Customer support response times can be inconsistent
Best For
Mid-sized businesses needing a feature-rich UCaaS platform with deep CRM integrations for sales and customer service teams.
Pricing
Plans start at $19.99/user/month (Mobile) up to $39.99+/user/month (Ultimate), billed annually; additional fees for international calling and advanced AI features.
Dialpad
enterpriseAI-driven cloud phone system featuring real-time transcription, analytics, and contact center tools for modern teams.
Real-time AI transcription and live call coaching with sentiment detection
Dialpad is a cloud-based business phone system offering VoIP calling, SMS/MMS messaging, video conferencing, and AI-driven features like real-time transcription and sentiment analysis. It integrates deeply with CRM platforms such as Salesforce and HubSpot, enabling automated workflows and call insights. Designed for modern teams, it supports unlimited domestic calling and provides mobile/desktop apps for seamless communication.
Pros
- Advanced AI tools including real-time transcription, sentiment analysis, and call coaching
- Strong integrations with CRM and productivity apps like Salesforce and Google Workspace
- Unlimited calling and texting in the US/Canada with intuitive mobile and web apps
Cons
- Higher pricing for AI premium features and enterprise plans
- Occasional call quality issues reported in high-volume or international use
- Limited advanced customization in entry-level plans
Best For
Mid-sized sales, support, and customer success teams seeking AI-powered insights from calls and texts.
Pricing
Starts at $15/user/month (Standard), $25/user/month (Pro), custom Enterprise; 14-day free trial.
Ooma Office
enterpriseAffordable VoIP business phone service with virtual receptionist, mobile apps, and unlimited US calling.
60+ free international calling destinations with crystal-clear PureVoice HD audio quality
Ooma Office is a cloud-based VoIP phone system tailored for small to medium-sized businesses, offering unlimited domestic calling, virtual numbers, and advanced call management features. It includes tools like auto-receptionist, ring groups, voicemail transcription, video conferencing, and integrations with popular CRMs such as Salesforce and Microsoft Teams. The platform emphasizes affordability, scalability, and ease of deployment without requiring on-premises hardware.
Pros
- Unlimited calling in US/Canada included in base plans
- No long-term contracts with month-to-month flexibility
- Strong mobile and desktop apps for remote work
Cons
- Limited international calling minutes without add-ons
- Customer support can be slow for non-premium users
- Advanced features like SMS require higher tiers
Best For
Small to medium-sized businesses seeking a cost-effective, easy-to-deploy VoIP solution without contracts.
Pricing
Essential plan at $19.95/user/month; Pro at $23.95/user/month; includes per-user licensing with optional add-ons.
GoTo Connect
enterpriseUnified communications platform offering phone, video, messaging, and SMS for distributed workforces.
Cloud provisioning and management of physical desk phones for plug-and-play deployment without complex IT setup
GoTo Connect is a cloud-based unified communications platform offering VoIP business phone systems, HD video meetings, team chat, SMS texting, and collaboration tools all in one intuitive app. It supports both softphones and physical desk phones, with features like auto-attendants, call queues, analytics, and CRM integrations for streamlined business communication. Scalable for small to large teams, it emphasizes reliability and ease of setup across remote, hybrid, or office environments.
Pros
- Comprehensive all-in-one UCaaS with voice, video, chat, and SMS
- Reliable call quality and extensive integrations with tools like Salesforce and Microsoft Teams
- Flexible hardware support including cloud-managed desk phones
Cons
- Higher-tier features require premium plans, increasing costs
- Customer support response times can vary
- Limited free international calling in base plans
Best For
Medium-sized businesses needing a scalable, feature-packed VoIP system with seamless collaboration for hybrid teams.
Pricing
Starts at $27/user/month (Basic, billed annually) up to $44/user/month (Enterprise); custom quotes for larger deployments.
Microsoft Teams Phone
enterpriseIntegrates PSTN calling, voicemail, and auto attendants into Microsoft Teams for enterprise collaboration.
Native Teams app integration for telephony, turning collaboration platform into a complete UCaaS solution without separate apps
Microsoft Teams Phone is a cloud-based telephony solution integrated into the Microsoft Teams platform, enabling businesses to make and receive PSTN calls, set up auto attendants, call queues, and voicemail directly within the Teams app. It supports flexible connectivity options like Microsoft Calling Plans, Operator Connect, and Direct Routing for SIP trunks. Designed for scalability, it leverages Microsoft 365's ecosystem to combine voice calling with chat, meetings, and collaboration tools.
Pros
- Seamless integration with Microsoft Teams and 365 ecosystem for unified communications
- Robust enterprise-grade features including AI-powered call insights and compliance tools
- Flexible deployment options and global scalability
Cons
- High cost structure with add-on licenses and calling plans
- Complex setup for advanced configurations like Direct Routing
- Performance dependent on internet quality and Microsoft ecosystem commitment
Best For
Mid-to-large enterprises already using Microsoft 365 that need integrated voice and collaboration tools.
Pricing
Requires Microsoft 365 license; Teams Phone Standard ~$8/user/month + Calling Plans from $12/user/month; Operator Connect or Direct Routing for custom PSTN.
Google Voice
enterpriseCloud-based phone system within Google Workspace providing calling, texting, and voicemail for small businesses.
Deep, native integration with Google Workspace for managing calls, texts, and voicemails directly in Gmail and other apps
Google Voice is a cloud-based VoIP service that provides businesses with virtual phone numbers for calls, texts, and voicemail management, integrated directly into Google Workspace. It offers features like call forwarding, spam protection, voicemail transcription emailed to inboxes, and basic call screening. While straightforward for small teams, it lacks advanced enterprise telephony such as call queues, IVR builders, or detailed analytics found in dedicated PBX systems.
Pros
- Seamless integration with Google Workspace (Gmail, Meet, Calendar)
- Automatic voicemail transcription and spam filtering
- Quick setup with no hardware required
Cons
- Limited advanced features like call queues or analytics
- Primarily supports US/Canada numbers with regional limitations
- Customer support relies on Google Workspace channels, no phone support
Best For
Small businesses and remote teams already using Google Workspace seeking simple, affordable VoIP without complex setup.
Pricing
Starts at $10/user/month (Starter), $20/user/month (Standard with auto-attendant), $30/user/month (Premier with SIP); requires Google Workspace subscription.
Conclusion
With a range of tools tailored to diverse business needs, the reviewed phone systems excel in delivering reliable, feature-rich solutions. At the top, RingCentral leads with its comprehensive cloud-based UCaaS, offering seamless integration of voice, video, and AI tools. Nextiva and Zoom Phone follow closely, standing out as strong alternatives—Nextiva for its exceptional SMB support and Zoom Phone for its hybrid work-focused integration. Each top choice proves distinct yet effective, catering to various operational styles.
Take the first step toward streamlined communication: start a free trial of RingCentral to unlock its full suite of capabilities and transform how your team connects.
Tools Reviewed
All tools were independently evaluated for this comparison