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Cloud PBX Software for Linux

Last updated: March 2026

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47 software options

Ultatel Cloud Business Phone System logo

Ultatel Cloud Business Phone System

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ULTATEL | Phone and Teleommunication Solutions For Business

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ULTATEL is a leading and innovating provider of cloud-based telecommunications. We help your business unify voice, chat, and video in a single user-friendly platform.

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3CX logo

3CX

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Web & mobile-based (Android, iOS) communications system.

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3CX is an open standards Cloud PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry. Video conferencing, live chat, mobile apps & advanced contact center features are all included at a fraction of the cost.

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Zoho Voice logo

Zoho Voice

Cloud-based business phone for SMB sales and support teams

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Zoho Voice is an online business telephony and contact center solution for businesses of all sizes. Packed with powerful features to seamlessly connect with your colleagues and customers, Zoho Voice helps you redefine your customer experience more efficiently with faster business communications.

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CloudTalk logo

CloudTalk

Cloud-based call center software for sales and support teams

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CloudTalk is a cloud PBX 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 scaling companies. Try a FREE 14-day trial.

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Webex Suite logo
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One app for everything. And everyone.

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Webex brings together Calling, Meeting and Messaging modes of collaboration into a seamless, engaging, inclusive and intelligent experience.

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LiveAgent logo

TitanHQ and Redstor powered by CyberSentriq

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LiveAgent is a cloud-based, full-service call center system, allowing you to communicate with customers across multiple channels. Features like call centralization, VoIP, and SIP trunks help improve your customer relations and increase sales.

Start with a 30-day free trial, no credit card needed.

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RingEX logo

RingEX - AI meets trusted communications

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Designed to give you a flexible, mobile, and powerful cloud phone system. Experience HD-quality web, audio, and video, along with one-click functionality and webinar capabilities with RingCentral Video. Promote collaboration with team messaging, unlimited SMS, and more.

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Bitrix24 logo
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All in one business management workspace

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Bitrix24 is a cloud PBX, call center and CRM in one! Trusted by 12 million businesses it's available in cloud and on-premises. Inbound, outbound, SMS, multilevel IVR, call routing and more.

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Kixie PowerCall logo
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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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Telnyx Suite logo

All-in-one communications platform & API

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Telnyx is an all-in-one communications platform which delivers voice, messaging & IP services for applications & communications companies. Telnyx enables users to integrate, manage & analyze all of their voice & messaging needs with features like elastic SIP trunking, programmable SMS, & more

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Zoom Phone logo

Cloud-based business phone system

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Zoom Phone is a cloud VoIP phone software designed for businesses of all sizes. With a streamlined administration interface and secure voice calls, Zoom Phone offers a flexible solution for remote workforces. It also features global coverage, virtual phone numbers, fixed VoIP, cloud PBX, multi-line phone systems, and a Zoom Phone API, among other functionalities.

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Acefone logo
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VoIP Phone Service trusted by modern businesses

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Transform your communications in tune with modern workspaces with Acefone’s cloud PBX systems. Manage seamless communications with true HD calls, even on low bandwidth. Expand functionality with 65+ features and 25+ integrations, with a guarantee of 99.5% uptime. Start your 14-day FREE trial today.

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ZIWO logo

API Based cloud contact center software with CRM Integration

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Cloud Based Contact Center Software. Stellar features to maximize your call center performance & let your business thrive. Full API Based with Readymade CRM Plugins. Virtual phone numbers in any country

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JivoChat logo
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Live chat with agent apps for iOS & Android

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JivoChat is a live chat software that offers customizable web & mobile chat widgets with 20 language options, and web-based, desktop, and mobile agent apps, including real-time visitor monitoring, pageview histories, email chat transcripts, file transfers, canned responses, customer ratings, & more

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OnSIP logo

Cloud-based softphone and voicemail platform

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OnSIP is a softphone and private branch exchange (PBX) solution that helps businesses to manage call recording, transfers, monitoring, reporting and more. It allows companies to utilize the desktop or mobile applications to conduct HD video or voice conferences as well as manage voicemails.

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Dialshree logo
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Cloud-based contact center solution

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DialShree is a cloud-based software designed to help businesses manage customer interactions. It can be deployed on any web server or cloud platform and can be used to manage interactions across multiple channels.

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AVOXI logo

Hosted business phone system and call center solution

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AVOXI is a cloud-based global voice and contact center solution that helps enterprises streamline customer service processes. With its interactive voice response (IVR) module, managers can configure the user interface and automatically route incoming calls to specific agents.

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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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VoIPstudio logo

VoIPstudio: the no-hassle VoIP phone service for business

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High-quality Cloud PBX designed for small and medium-sized businesses. + 40 advanced features: Conferencing, Call Forwarding, Call Recording, IVR, Integrations, etc. Get a number instantly, anywhere in the world, or port your own. Perfect for working from home or team collaboration. 24/7 support.

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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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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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HoduPBX logo

VoIP and communication management system

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HoduPBX is a VoIP communication system tailored for global businesses that provides various features including auto attendant, call monitoring, call routing, and real-time analytics and reporting, and more. Furthermore, it integrates with various CRM systems and supports a range of hardware devices.

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TalkChief logo

TalkChief: Your Modern Business Phone

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TalkChief is a cloud-based telephony solution tailored to facilitate seamless communication and customer engagement for call centers, nonprofits, startups, and enterprises. It empowers users to connect with customers through toll-free or international numbers and other robust features.

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55PBX logo

Virtual PBX solution to boost your team's productivity

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55PBX is a Brazilian based Business Communications Platforms with Voip, Whatsapp, SMS and integrations with Support, Sales, Ecommerce that facilitates your team's communication with their customers.

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Freshcaller logo

Modern Phone System for customer support & sales

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Freshcaller is a modern cloud PBX 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 phone operations. Freshcaller offers phone numbers in 90+ countries.

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