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Top Rated Business Phone Systems Software with Open source - Page 6

Last updated: October 2026

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156 software options

JustCall logo

Cloud-based AI communication platform for sales teams

AI-powered business phone system with AI Voice Agents for 24/7 call handling. Built for modern teams. Try free for 14 days.

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DialPhone logo
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AI-powered phone and contact center platform

DialPhone AI Pro is a cloud-based business phone system with VoIP calling, smart call routing, IVR, call recording, voicemail, SMS, video meetings, team chat, AI Receptionist, CRM integrations, analytics, and secure communication tools.

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Fastcall logo
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Salesforce CTI: Native Phone Dialer + SMS

FOR SALESFORCE TEAMS: Fastcall CTI is a native app built for and dedicated to Salesforce. Powered by Twilio, Fastcall increases productivity & improves customer service with advanced features such as Call Routing, IVR, Call Recording, Omni-Channel, SMS & MMS. High-Velocity Sales and Call Insights.

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CallClerk logo
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AI phone answering & booking for small businesses

CallClerk is an AI-powered virtual receptionist service designed for small businesses. The software answers incoming calls around the clock, books appointments through Google Calendar integration, and provides bilingual support in English and Spanish. CallClerk offers features including caller recognition, call transfer capabilities, automated call summaries, and customizable AI voices.

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TeamsPhony logo
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Migrate your business telephony to Teams

TeamsPhony is an enterprise VoIP telephony solution, directly integrated into Teams.

You can handle all your business calls with your Microsoft Teams application.

Our infrastructure is certified by Microsoft to guarantee optimal service quality and reliability.

Read more about TeamsPhony

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TENIOS Voice API logo
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Integration platform for integrating telephony applications

TENIOS Voice API facilitates the seamless integration of speech services into your cloud telephony using standard web technologies. This API includes a variety of functions that enable software applications to initiate and receive calls, eliminating the need for developers to handle TK technologies.

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Voice Solution logo
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We simplify enterprise communication platform

Voice Solution is a cloud-based telephony solution that helps improve enterprises' communication systems to connect with customers at scale via a multi-channel platform.

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in2pbx logo
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The Small Business Phone System

A hosted phone system that comes with an extensive list of calling and call management features that are easily affordable for small and medium businesses.

Specifically created for the office or remote working, in2pbx can be used across multiple devices and allows users to easily set call routing.

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Tinylawn logo
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AI receptionist for landscaping and pest control businesses

Tinylawn is a 24/7 AI receptionist for lawn care, landscaping, pest control, and other service businesses. It answers calls, captures leads, schedules appointments, handles FAQs, and provides call summaries and property insights—helping teams book more work without extra office staff.

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Sentient Voice logo
(0)

Read more about Sentient Voice

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3C Plus logo
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Call center software for managing telephony operations

3C Plus is a cloud-based platform that helps companies manage telephony operations. It facilitates integration with CRM systems and enables businesses to control operations to gain productivity and prevent resource utilization on unsuccessful calls.

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IVRy logo
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AI-powered customer relationship management (CRM) software

IVRy is an AI-powered customer relationship management (CRM) software that leverages expertise, automating repetitive tasks and enabling cross-platform integrations. The system supports bulk unstructured data processing, helping enterprises manage multiple stakeholders simultaneously by providing functions to process calls and enhance feedback collection across platforms. Integrate with apps such as Slack and LINE to optimise inbound and outbound calls.

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iTeleCenter logo
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A Virtual Phone System for Entrepreneurs & Small Businesses

iTeleCenter is a cloud-hosted virtual phone system with call forwarding, voicemail, texting, extensions for departments & employees, online faxing and many more

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Telecmi logo
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Business phone system

TeleCMI - provides communication solutions for any business cases. TeleCMI is a modern day business phone system which offers global communication solutions for businesses ranging from startups, SMEs and Enterprises.

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Goldfish.ie logo
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Business phone systems software

Goldfish.ie is VoIP software that offers premium features such as call recording and call director, plus an inclusive range of features such as three-way calling and call waiting. The system integrates with popular customer relationship management (CRM) systems such as Salesforce and Zoho.

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DialLink logo
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The Best Phone System for Small Businesses

DialLink provides SMBs and startups with a business phone system that combines AI voice agents, advanced call handling, and business messaging to automate routine interactions and project a professional image, without the cost or complexity of enterprise tools.

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Enreach Contact logo
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Cloud-based PBX tool

Enreach Contact is a cloud-based PBX that allows team members to work and communicate with users from any location. With this, they can have answering machines, conference lines, extensions, call routing, unified messaging and so much more all in a unified platform.

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Seglo logo
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Keep good customers coming back.

Seglo is a connected grooming business platform built to help growing and multi-location salons keep more regular customers through better rebooking, communication, customer context and day-to-day operations.

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Radius Connect logo
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Cloud-based telephony & business communication solution

Radius Connect enhances business communication with ease. The cloud-based telephony solution offers flexibility, affordability, and simplicity. It effectively lowers call expenses, enhances call quality, and ensures the business is future-ready.

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Telfon logo
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Cloud VoIP for business calls and messaging

Telfon is a cloud-based virtual phone system that enables businesses to make calls and send SMS and MMS messages across multiple devices. The platform offers features including call forwarding, call recording, voicemail transcription, and call analytics. Telfon provides virtual phone numbers in over fifty countries and includes a Chrome desktop application for browser-based access.

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Allo logo
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AI-enabled phone system for small businesses

Allô is a mobile-first phone system built for busy entrepreneurs and small businesses.
Powered by AI, it helps you grow your business without losing focus.

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VeraDial logo
(0)

AI receptionist and business line for small businesses

AI receptionist and business phone for small businesses in the US and Canada. Vera answers calls, handles routine questions, takes messages and connects callers. Review transcripts and summaries from iOS, Android and the web.

Read more about VeraDial

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CommandLink SD-WAN logo
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Network mamagement platform

CommandLink SD-WAN delivers seamless multi-wan connectivity for all locations, integrating security and improving cloud application performance. The UTM/NGFW integration offers direct access to the internet for every location, avoiding high latency traffic through carrier gateways.

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HireJosie logo
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Stop losing revenue to missed calls!

AI receptionist that answers every business call 24/7 in under a second, books appointments into Google Calendar, and sends SMS summaries. Free to start, live in 5 minutes.

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Omnivoice logo
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Business communication tool and phone system for SMBs

Omnivoice is a cloud-based phone system that help users keep track of business communication including calls, texts, voicemails, notes' history and call recordings all in one place accessible to every team member. It also allows users to route calls with customizable call flows using visual flowcharts.

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