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Top Rated Business Phone Systems Software with Open source - Page 3

Last updated: June 2026

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150 software options

UniTalk logo

Business phone system for small to large businesses

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UniTalk is an IP telephony solution for businesses. It offers features like quick setup, international phone numbers, call recording, IVR, SMS services, and integration with CRM systems and analytics.

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Yeastar Cloud PBX logo

Digital Value, Delivered.

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Run your business phone system on the cloud with secure calling, unified communications, and centralized management.

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VIS Centralino in Cloud logo

Cloud-based business phone solution

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VIS-Centralino In Cloud is a cloud-based phone system for small businesses and public administrations that helps control and modify the functions of VoIP Cisco CUCM.

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VoiceShot logo

Auto attendant cloud phone system

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VoiceShot is an auto attendant cloud phone software that helps businesses manage call forwarding, transfer, screening, and reporting on a centralized platform. It enables users to create pre-recorded greetings and automatically deliver all voicemails to linked email addresses in WAV file format.

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Virtual Switchboard logo

Cloud-based virtual business phone system

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Virtual Switchboard is a cloud-based business phone system that allows organizations to manage inbound/outbound calls and streamline communications from any device. It offers advanced features, such as extensions, multi-tasking, and a call recording system.

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Nextiva Contact Center logo

Omni-Channel Customer Relationship Management

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Nextiva is transforming the way businesses communicate. Nextiva is a communications platform providing businesses with big-business phone features at a small-business price and it offers ease of use, manageability, scalability, reliability, and enterprise-class functionality.

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Callture logo

Virtual PBX software for small to medium businesses

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Virtual PBX system turns your phone into an office phone system with multiple extensions and personalized voicemail. You can record customized greeting, have an operator extension and access to online management center. You will never install any hardware or have to deal with complicated software.

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Yay logo

Powerful business cloud phone system for easy collaboration

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Yay is a cloud-based phone system that combines business messaging, HD VoIP, and a host of call features. It offers instant setup and friendly support.

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Placetel logo

All-in-one - cloud calling, team messaging & online meetings

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Placetel + Webex combines business telephony software from the cloud with the full Webex suite. Benefit from over 150 telephone system features paired with video conferences in HD, file and screen sharing, call control, instant messaging, call center functions and unified communication.

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Audara logo

AI-Driven Omnichannel Contact Center Platform

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Audara unifies voice, chat, video, and WhatsApp in one AI-driven cloud phone system. Includes extensions, WebPhone, call queues, and CRM integration, enhanced with real-time analytics, AI Copilot, and SmartAgents automation.

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SureTel logo

Business VoIP service

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SureTel is a cloud-based telephony solution, which helps businesses manage communication across teams & clients through Google integrations, call history, route timing, custom caller ID & more. It lets users record calls to store customer interactions in a unified database for future reference.

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Asterisk logo

Open-source modular communication system

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Asterisk is an open-source framework that helps to build communication applications and is used by small, midsize and large companies and governments worldwide

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Voice Clearity logo

Cloud Telephony Solution

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Voice Clearity is a cloud telephony solution provider It provides customized solutions per business needs and call volume. It also includes easy integration with leading CRMs.

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RingTree logo

AI-powered virtual small business phone system

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AI-enabled business phone system that offers IVR auto-attendant, multiple phone numbers, route calls, manage users and teams, and more.

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StringeeX logo

Omnichannel contact center software

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StringeeX is an omni-channel contact center software that helps businesses with ticket management, live chat, customer contact management, and Facebook fanpage management. Teams can maintain a centralized database of customer contact information, including contact, landing page, and events for personalized support.

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PBXPlus logo

Virtual PBX business phone system for growing businesses

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Increase your business productivity with PBXPlus virtual PBX software by adding unlimited extensions, call forwarding, setting business hours, integrating with your CRM and many more features.

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metricVOICE logo

Cloud Hosted Voice & UCaaS - metricVOICE by Fastmetrics

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metricVOICE by Fastmetrics - cloud hosted phones, VoIP & UCaaS. Backed by LIVE USA SUPPORT.

Connect how you work, where you work. The ESSENTIALS plan starts from $15 per month.

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RingRx logo

HIPAA-compliant phone, fax, text, and video for healthcare

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RingRx is a HIPAA-compliant phone system designed for modern healthcare providers. It supports healthcare professionals with reliable voice, text, fax, and video communication software. RingRx features enterprise-quality technologies to streamline patient communications, including customizable call routing, easy voicemail access, and secure texting capabilities.

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CircleLoop logo

Cloud based business telephony system

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CircleLoop is a cloud-based,self-serviced business telephony software system with native desktop, and mobile apps, boasting features including UK and international number support, personalized voicemail, call transfer, call recording, SMS integration, smart notifications, contact management and more

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InfoFlo logo

HIPAA compaliant case management software

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HIPAA compliant Case Management software made simple so you can focus on your running your organization all at an affordable price!

Seamlessly manage all your client goals, referrals, documentation, events, classes, and activities within a single platform—eliminating the need for multiple tools.

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INO CX logo

All-in-One Business Communication Solution

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INO CX is a cloud-based omnichannel call center software, which helps businesses aggregate customer interactions from various channels such as voice, SMS, email, chat in a centralized platform.

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Axon Virtual PBX logo

Manage phone calls for your business or call center

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Axon is a virtual IP PBX for Windows designed to manage phone calls in a business or call center environment.

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Distrobird logo

All-in-one sales management platform

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All the tools your revenue team needs on a single platform, such as lead capture, prospecting, multi-channel engagement, calls, reporting, and more, for free. Double your sales team's output with fewer tools.

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BounceHelp logo

Powerful Callback Widget for Your Website

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Cloud-based marketing and customer engagement solution that helps boost and convert website visitors into inbound calls.

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iPlum logo

VoIP app for calls, secure text & phone tree communication

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iPlum is used by busineses in healthcare, financial, sales, customer service, real estate, hospitality and more.
The iPlum provides calls, secure text & phone tree communication. We solve the privacy problem of professionals doing business calling & texting with their smartphone.

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