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Top Rated VoIP Software with Open source - Page 7

Last updated: August 2026

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257 software options

Zoiper logo

Cross-platform VoIP softphone dialer for SIP and IAX systems

Zoiper is a cross-platform VoIP softphone dialer that allows voice and video calls, plus instant messaging, to be conducted through multiple Private Branch Exchnage (PBX) networks or favoured Session Initiation Protocol (SIP) providers, with smartphone apps also available for iOS and Android devices

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SendHub logo

Business Communication Simplified

Make and receive calls through your computer or laptop while connected to WiFi or using your cellular plan. Every plan includes VOIP calling.

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CloudTalk logo

Cloud-based call center software for sales and support teams

CloudTalk is a VoIP phone system built for modern companies. Make things easier for your sales and customer support teams with 70+ advanced features and easy-to-setup integrations with your existing business software. It’s the perfect phone system for mid-sized companies. Try a FREE 14-day trial.

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8x8 Contact Center logo

One solution for every customer interaction.

8x8 Contact Center is a complete, reliable and secure solution that helps businesses boost engagement, collaboration, and operational effectiveness for customer success.

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Cloudya logo

Integrated business communications platform.

NFON delivers smart VoIP communication solutions for businesses with a cloud-powered suite. It integrates voice and video calls, customer contact management, CRM tools, seamless collaboration, and enablement features, all in one platform to enhance productivity and streamline operations.

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3CLogic logo

Cloud Call Center Solutions

3CLogic's cloud call center, hosted on Amazon Web Services, is a fully web-based and VOIP-enabled offering with minimal system requirements for agents to quickly and easily leverage its voice and telephony capabilities.

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Ring.io logo

Intelligent sales call handling with native CRM integration

Ringio promises improved caller productivity with logging, lead generation, call routing and reporting features crucial to improving sales and customer support

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CxEngage logo

Video, audio & web conferencing platform

Lifesize is an audio, web & video conferencing tool which supports chat functionality, an integrated search-based directory, plus video call recording & sharing

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Natterbox logo

The Voice Experts for Salesforce

Global Cloud PBX, with eight data centres around the world. We have built and own 100% of our software, hardware and data centres. No external parties.

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Dialpad AI Meetings logo

AI-native meetings that turn conversation into action.

Dialpad is an AI-native VoIP platform where Agentic AI reasons through every conversation in real time, connecting voice and video that used to sit in silos, including meetings in Dialpad AI Meetings. Intelligence compounds over time, governed by Dialpad's Guardian layer.

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inconnect logo

Make Contact. Do Business.

inConcert Contact Center allows businesses to reach their customers through any channel, including voice and video calls, email, live chat, SMS/text messaging, social networks, WhatsApp, and more. The software aims to provide an outstanding experience and transform every customer interaction.

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BSG logo

We humanize your communications

Messaging services, Authentication tools, and Mobile Number Intelligence with the highest security standards.

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GoTo Connect logo

The first-ever truly unified voice and video solution.

GoToConnect combines the power and reliability of Jive's cloud VoIP phone systems with GoToMeeting's web, audio and video conferencing into one simple, reliable and flexible solution. Users can meet, talk, chat, text and collaborate seamlessly via web browser, desktop application, or desk phone.

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Acefone logo

VoIP Phone Service trusted by modern businesses

Acefone is a VoIP service provider trusted by 10,000+ reputed companies. From guaranteed 99.5% uptime and 24x7x365 support to unlimited calling, get everything your business needs for flawless customer service and butter-smooth operations. Special offer: Unlimited calling at just $12.99/user/month

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Yodel logo

Business phone system for streamlining customer service

Yodel is a cloud-based business phone system designed to help teams manage inbound and outbound calls via Slack using existing phone numbers. It lets customer service representatives view which members are on active calls, and join conference calls to facilitate communication across organizations.

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Sprinklr logo

The definitive AI-native platform for customer experience

Sprinklr is the definitive, AI-native platform for Unified Customer Experience Management (Unified-CXM), empowering brands to deliver extraordinary experiences at scale, across every customer touchpoint.

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Avaya Cloud Office logo

Unified communications and collaboration

Avaya Cloud Office is a cloud-based collaboration and unified communications solution for SMBs. The software combines calling and chat, with support for multiple devices per number and seamless switching between mobile and desk phones.

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Cisco Unified Communications Manager logo

Communication and collaboration management solution

Cisco Unified Communications Manager (formerly CallManager) helps businesses connect and collaborate with teams via IP telephony, voice & video calling, messaging, and more. The activation code onboarding functionality lets users create phone records without a phone’s MAC address.

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Truly logo

Professional business calling and routing for mobile devices

All-cellular business phone solution offers professional call quality, conversation tracking, and CRM integration for iOS and Android devices

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GoTo Meeting logo

Online meeting software with HD video conferencing

Get a fast, easy and reliable professional solution that enables customers to connect with colleagues through in-meeting chat or conference calling, and screenshare their presentations, all with the click of a button. The Meeting solution from GoTo Connect pairs productivity with flexibility.

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Ytel logo

Awarded Outbound Contact Center Software (24/7 U.S. Support)

Great for lead gen and companies with advanced outbound calling and texting needs. TCPA, FCC, and CRTC compliant when used correctly.

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Plivo logo

API-based Voice and SMS platform for businesses of all sizes

Plivo is an API-based voice & SMS developer platform & global carrier service provider for businesses of all sizes wishing to leverage cloud communications. Customers can access versatile HTTP APIs for building voice & SMS capabilities into any web or mobile app using any web standard language.

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Bria logo

VoIP communication and collaboration management solution

Bria is a cloud-based and on-premise VoIP solution that helps businesses manage communication & collaboration via messaging, file sharing, video conferencing & more. The white-label capabilities help organizations design a personalized softphone using custom logos, themes, colors, and configuration.

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VOXOX logo

Voice and SMS marketing suite of solutions

VOXOX is an innovator in 5G-AI cloud-based communication solutions with 15 years of proven success in enabling small businesses to create meaningful and lasting connections with their customer through easy-to-use, smart, cloud-based voice and SMS automation solutions.

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Freshcaller logo

Modern Phone System for customer support & sales

Freshcaller is a modern VoIP phone system for customer support, sales, IT, and HR teams. Freshcaller's cloud-based architecture brings together features like IVR, Smart Escalations, Voicebots, Customizable Performance Reporting to set up VoIP inbound & outbound calling. 90+ countries phone numbers.

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