Best VOIP Software

8x8 is a cloud communications company based in Campbell, California, offering unified communications and an AI-enabled omnichannel contact center under one platform. Its Contact Center product supports voice, chat, email, SMS, social messaging, and WhatsApp through a single routing engine, alongside an Agent Workspace and Supervisor Workspace for managing queues, coaching, and reporting.

8x8 no longer publishes public pricing on its website, having moved to a sales-led quoting model in late 2023. Historic third-party pricing guides reference per-user monthly rates for 8x8's X Series plans, but exact current prices are not independently verifiable from 8x8's own site, so buyers should contact 8x8 sales directly for an accurate, up-to-date quote.

Grasshopper is a virtual phone system aimed at solopreneurs and small businesses that want a professional business number without new hardware. It offers toll free, local, and vanity numbers, custom greetings, voicemail transcription, call forwarding to a personal phone, and unlimited users and extensions on its higher tiers. The product is owned by GoTo, headquartered in Boston, Massachusetts.

Grasshopper sells three plans, True Solo, Solo Plus, and Small Business, priced per month with a discount for annual billing. A seven day free trial is available but limits usage to 50 minutes of calling. Because third party sources reported inconsistent current prices for the Small Business tier at the time of this research, exact current pricing should be confirmed on grasshopper.com before publishing.

Zoom Phone is a cloud-based VoIP business phone system that lets users call, text, and fax from the Zoom desktop app, mobile app, web, or compatible desk phones. It provides traditional PBX features such as call forwarding, transfers, ring groups, unlimited auto attendants and call queues, plus AI-powered voicemail transcription, call summaries, and an AI receptionist that can greet and route callers.

Zoom Phone is offered as a standalone add-on or bundled into Zoom Workplace plans alongside meetings, chat, and whiteboards. Coverage spans more than 49 countries through Zoom's own PSTN service or bring-your-own-carrier options. It suits small teams up to large enterprises, with higher tiers adding single sign-on, device management, and data governance controls.

Vonage Communications APIs (formerly Nexmo) is a cloud platform for adding SMS, voice, video, and authentication features into websites and applications. Businesses use its SMS, Messages, Voice, Video, and Verify APIs to reach customers across SMS, MMS, RCS, WhatsApp, and Facebook Messenger, or to build in-app calling and video experiences on Vonage's carrier-grade global network spanning over 1,600 telecom networks.

Pricing is pay-as-you-go and billed per second or per message, with no fixed monthly fee for API access, and free trial credit is available with no credit card required. Vonage is part of Ericsson and serves developers and enterprises building customer engagement, fraud prevention, and contact center tools.

Dialpad is an AI-native business communications platform that combines a cloud phone system, video meetings, and team messaging under its core Dialpad Connect product, alongside separate Dialpad Support (contact center) and Dialpad Sell (sales dialer) offerings. It is built around DialpadGPT, its in-house AI model that powers live call transcription, automatic call summaries, and real-time coaching for sales and support agents.

The core Connect plans are Standard and Pro, priced per user per month with lower rates for annual billing, plus a custom-quoted Enterprise tier. Dialpad integrates with tools including Salesforce, Zendesk, Google Workspace, and Microsoft 365, and offers native desktop and mobile apps in addition to browser access, making it suited to distributed teams that want AI-assisted calling built in rather than bolted on.

Aircall is a cloud-based business phone and call center platform designed for sales and support teams. It offers virtual phone numbers, IVR menus, call recording, click-to-dial, SMS and MMS, a softphone, and smart call routing by team, skill, or location. AI features include voice agents that handle after-hours and overflow calls, AI Assist for real-time coaching and call summaries, and analytics dashboards that track wait time, missed calls, and call volume.

The platform connects with over 250 CRMs, help desks, and business tools, including Salesforce, HubSpot, and Zendesk. Aircall is aimed at growing sales and support teams that need call center functionality without heavy infrastructure, and every plan requires a minimum of three user licenses.

RingCentral is a cloud communications platform that combines business phone calling, team messaging, video meetings, and SMS in a single app called RingEX. It supports unlimited domestic calling, auto attendants, IVR menus, call queues, call recording, and integrations with tools like Salesforce, Microsoft Teams, Google Workspace, HubSpot, and Zendesk. The platform can be set up quickly without on-premise hardware and works across desktop, web, and mobile devices.

Beyond core business phone plans, RingCentral offers add-on products including RingCX (an AI contact center), an AI Receptionist, RingCentral Events for webinars, and RingCentral Rooms for conference spaces. Plans scale from small teams to large enterprises replacing legacy PBX systems, with AI features like call transcription, meeting summaries, and intelligent call routing built into higher tiers.

Ooma is a publicly traded VoIP provider headquartered in Sunnyvale, California, offering the Ooma Office business phone system alongside residential and enterprise products. Ooma Office includes a virtual receptionist, a free toll free number, unlimited calling across the US, Canada, Mexico, and Puerto Rico, and more than 100 standard features, with no long term contract required.

Three plans are available, Essentials, Pro, and Pro Plus, each billed per user per month, plus a custom priced Enterprise tier for SIP trunking and advanced call center needs. Ooma does not offer a traditional free trial but backs new subscriptions with a 30 day money back guarantee, and charges a one time activation fee for new lines.

GoTo Connect is a cloud based business phone system that combines VoIP calling, video conferencing, and team messaging in one platform, built on the former Jive VoIP service. It offers unlimited auto attendants, call queues, ring groups, call recording, and real time analytics, along with HD video meetings for up to 250 participants and voicemail transcription.

The service is sold in tiers, with an entry Phone System plan for basic calling, a Connect CX plan adding shared inbox and social channel support, and a Contact Center plan with AI powered analytics and dialers for larger support teams. It suits small businesses through enterprises that need reliable hosted calling, over 180 supported desk phone models, and mobile apps for iOS and Android.

Nextiva is a cloud communications platform providing VoIP business phone service, video conferencing, team chat, and contact center software for small businesses through larger support organizations. Its Core, Engage, and Scale plans bundle calling, SMS, and unified communications, while separate contact center tiers add omnichannel routing, AI-powered call transcription, and supervisor coaching tools for formal support operations.

The platform includes the NextivaONE app for desktop and mobile, real-time analytics dashboards, and an AI copilot that assists agents during calls and chats. Nextiva is headquartered in Scottsdale, Arizona, and pricing is lowest with annual contracts for small businesses; larger contact center tiers typically require a custom quote from sales.