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Top Rated VoIP Software with Slack

Last updated: May 2026

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43 software options

Aircall logo

Aircall

AI powered customer communications platform

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Make every phone conversation count and give time back to your reps with 100+ CRM, Helpdesk, and software integrations.

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Dialpad logo

Dialpad

Cloud communications system for enterprise businesses

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Dialpad is a cloud communication platform and business phone system that provides organizations with the latest in VoIP telephony technology to keep teams connected and productive. The platform comprises three integrated products; Dialpad Connect, Dialpad Support, and Dialpad Sell.

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JustCall logo

JustCall

AI-Powered Customer Communication for Sales & Support Teams

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JustCall is an all-in-one VoIP system with AI-powered calls, messaging, CRM sync, call monitoring, and global reach across 70+ countries.

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Ringover logo

Ringover

100% cloud phone for startups and SMEs

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Ringover allows you to make unlimited VoIP calls to over 110 destinations worldwide - no matter your plan - offering you precise, transparent rates for all other global destinations.

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Zoom Workplace logo

Zoom is an all-in-one collaboration platform

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With Team Chat, Phone, AI Companion, and more, Zoom Workplace is the platform for your best work. With Zoom Workplace, you can share your calendar availability, connect with your team, access your work phone on any device, and more.

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CallTools logo

All-in-one predictive dialer & inbound call center solution

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CallTools is an all-in-one call center solution offering an outbound power dialer & inbound call center with live agent monitoring, skill-based routing, & more. Unlimited Minutes on Predictive, Power, and Preview Dialer with Built-In Web Phone, CRM, and Dedicated In-House Support Team. Call us now!

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Gladly logo

Cloud-based customer service platform

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Gladly is the only CX AI that delivers cost savings AND customer devotion—built to engage, not deflect. Learn more at gladly.ai

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Intermedia Unite logo

All-in-one communications & collaboration tool

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Award-winning VoIP business phone system that helps small businesses lower costs and increase employee productivity. With complementary mobile and desktop apps Unite users stay seamlessly connected. Unite is backed by J.D. Power-certified 24/7 support and a 99.99% uptime service level agreement.

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Kixie PowerCall logo

More Connections, Better Conversations. AI-enhanced RevComms

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Kixie is a cutting-edge revenue communications platform designed to supercharge your team’s calling and texting capabilities. Kixie leverages AI and automation to streamline outreach, maximize efficiency, and drive real revenue growth — all while keeping the human element in every conversation.

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Close logo

The conversation-first CRM for small, scaling sales teams

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Close is the sales engagement CRM that helps SMBs turn more leads into revenue. Get advanced VoIP calling features like the Power Dialer and Predictive Dialer. With local phone numbers available, you can increase your call volume from anywhere in the world.

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Spoke Phone logo

Great customer conversations anywhere, on any device.

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Spoke Phone is the leading platform for high-value, complex, and regulated conversations. Spoke guides employees to say and collect the right things so deals move forward and customers get better experiences. Compliant calls, SMS, and WhatsApp conversations on mobile phones and desktops devices.

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VirtualPBX logo

Trusted VoIP for any office, anywhere.

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Get Unlimited Minutes, Text Messaging, and a VoIP Device for $18/mo***** Save up to 80% off business VoIP today!

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uContact logo

Beautiful Contact Center Solution - Omnichannel - All in One

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uContact is a beautiful contact center solution designed to make the life of the agents easier and more productive. Ideal for inbound, outbound & blended call centers.

Key features:
- True All in One
- Omnichannel: Email, SMS, Web Chat, Facebook, Twitter.
- IVR
- Gamification
- Recording
- WFM

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FreeConferenceCall.com logo

Web conferencing and team collaboration solution

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FreeConferenceCall.com is a conference management solution designed to help businesses organize, launch & manage meetings with external and internal stakeholders. The audio conferencing functionality lets users connect with participants using VoIP or domestic/local dial-in numbers.

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NUACOM logo

All-in-one Cloud Phone System for SMBs

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NUACOM offers an all-in-one Cloud phone system for SMBs that need a modern, fully scalable business communication solution. The platform offers over 50 business-class features to help boost productivity, connect departments, and centralize telephony for all locations.

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Talkdesk logo

Cloud-based contact center & customer experience platform

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Talkdesk browser based call center software works seamlessly over VoIP. Enjoy advanced functionality such as ACD, skills-based routing, IVR and more.

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Vodia PBX logo

Cloud-based IP PBX for business communications

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Vodia IP-PBX is a cloud-based business phone system that enables professional communication from office or remote locations. The platform supports mobile and desktop applications, VoIP phones, and features unified caller identification across devices. It includes Microsoft Teams integration, CRM connectivity with platforms like HubSpot and Salesforce, and multimedia messaging capabilities. The system offers multi-tenant architecture with a built-in session border controller and load balancer.

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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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net2phone Canada logo

Cloud-based VoIP communications platform for business users

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net2phone Canada is a SaaS-based communications provider offering VoIP and analytics solutions to Canadian businesses, with scalable telephony packages providing call queues, unlimited international calling to 40+ countries, free Polycom phones, & features including data insights & app integrations.

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GoCo logo

Cloud-based business phone system for businesses

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GoCo is a cloud-based business phone system that enables hybrid work with call routing features across devices such as desktop, mobile, and tablet.

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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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Avaya Spaces logo

Video conferencing & meeting platform for team collaboration

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Avaya Spaces is a unified communications platform that provides non-profit organizations, educational institutions, and corporate businesses with tools to facilitate collaboration across remote teams. Key features include alerts/notifications, messaging, task management, progress tracking, and more.

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8x8 Contact Center logo

One solution for every customer interaction.

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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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CxEngage logo

Video, audio & web conferencing platform

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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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