Best Telephony Software for Linux
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Compare the Top Telephony Software for Linux as of October 2025
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What is Telephony Software for Linux?
Telephony software is a type of communication technology that enables voice and video communication over telephone systems, computers, and the internet. These platforms are designed to manage, route, and track phone calls, messages, and multimedia communications within businesses or personal environments. Features of telephony software often include VoIP (Voice over Internet Protocol) support, call routing, interactive voice response (IVR), voicemail, call recording, and integration with customer relationship management (CRM) systems. Many telephony systems also include analytics tools for tracking call volumes, durations, and customer interactions. By improving communication efficiency and providing scalable solutions, telephony software is crucial for businesses looking to streamline their communication infrastructure. Compare and read user reviews of the best Telephony software for Linux currently available using the table below. This list is updated regularly.
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1
VirtualPBX
VirtualPBX
VirtualPBX stands as an acclaimed Business Phone System Provider, renowned for its award-winning services. Offering industry-leading features, boasting 99.999% reliability, and competitive pricing, VirtualPBX equips businesses with top-tier communication tools for seamless unified communications. Catering to a diverse range of enterprises, from entrepreneurs to contact centers seeking a complete contact center solution. VirtualPBX serves as the ultimate destination for modern business VoIP needs. With plans starting at just $15 per month, VirtualPBX ensures accessibility and excellence in communication solutions. Get a free demo today!Starting Price: $15/month -
2
My Call Cloud
My Call Cloud
My Call Cloud provides robust, stable, and user-friendly hosted cloud Contact Center Solutions. My Call Cloud assists clients to effectively manage Inbound, Outbound and Blended calling with agents in-house or, remote. Cutting-edge contact center solutions such as SMS, IVR message blasting (with Text-to-Speech), FB messaging, and other services such as No-Dial (voicemail delivery to cell phones without ringing) are just a few of the full-service suite options available to our Call Center Software Business Partners. Upgrade your contact center software expectations with My Call Cloud automated dialer technologies. With full campaign and list management, leads can be optimized to reduce call ratios, achieve sales and marketing goals and connect with customers real-time without delays. Built-in safeguards ensure compliancy with the Telephone Consumer Protection Act with multiple internal do-not-call lists supported. Best in class cloud call center software!Starting Price: $65.00/month/user -
3
XCastLabs
XCastLabs
The First and Still the Best in VoIP Communication! Our proprietary technology has been providing telecom services for over 20 years. XCast’s broad suite of products—Hosted IP-PBX, SIP Trunking, Carrier Services and Call Center Solutions—are available directly from XCastLabs or through our white label Resellers, our agent partners, carriers or call centers. XCast exceptional service, rates, and products meet the FCC standards for STIR/SHAKEN network compliance. XCast’s Hosted PBX solution is delivered over the Internet to any of your connected devices. Promotional plans start as low as $9.95 per month and include FREE Outbound minutes and a FREE Yealink Business Phone per extension. Sip Trunk Plans begin at $4.95 w/unlimited inbound minutes and free installation. Our Automatic Call Distribution (ACD) system has full reporting, automated customer callback, custom prompts, music on-hold, call recording, call monitoring (with whisper and barge-in), call transfer and more!Starting Price: $4.95/month -
4
Thirdlane
Thirdlane
Thirdlane is a scalable UCaaS platform that blends multi-tenant PBX, Contact Center, and collaboration apps into one solution. MSPs, Enterprises, and telecom providers adopt Thirdlane when they want freedom of deployment, deep integrations, and reliable control over their communications stack. Whether your team prefers cloud-hosted services or on-premises deployments, Thirdlane adapts to your strategy. IT departments appreciate the API-first design, while business leaders value the ability to cut costs and avoid lock-in. Core benefits: - Enterprise-grade PBX with calling, video meetings, voicemail, and advanced routing. - Unified Thirdlane Connect apps for chat, video meetings, and file sharing. - Built-in Contact Center - Advanced analytics to improve service and sales. - CRM integration for context-rich customer interactions. - White-label branding across all user touchpoints. - Options for geo-redundancy and high availability. -
5
Zadarma
Zadarma
Powerful Cloud Telephony for Global Businesses Zadarma offers a feature-rich VoIP platform designed for businesses that want flexibility, scalability, and professional communication without high costs. Set up your cloud PBX in minutes, manage international teams, and serve customers worldwide — all from a single interface. Key features: - Virtual phone numbers in 110+ countries - Free cloud PBX with IVR, call routing, and analytics - Integration with CRMs: HubSpot, Zoho, Bitrix24, and more - Apps for desktop, mobile, and browser-based calling - AI-powered voice agents and call tracking - Full control via web interface and API Ideal for remote teams, support centers, and growing companies looking to modernize their phone systems.Starting Price: $2/month -
6
VoIPstudio
VoIPstudio
VoIPstudio is a cloud-based business telephone system created for organizations that require professional communications features without the hassle and expense of owning and managing on-site PBX equipment. With thousands of systems installed worldwide, VoIPstudio is the first choice for companies when selecting a VoIP solution. Its power and simplicity make VoIPstudio perfect for any business, from startups to mid-sized call centers. With VoIPstudio, you get an all-in-one business VoIP solution with no contracts and no hidden costs, available at consumer-level pricing. All our clients get all our features from day one, including a virtual switchboard, virtual numbers, conference calling, call center, call recording, and much more. VoIPstudio also includes advanced communication tools like videoconferencing, screen sharing, or integration with lots of CRMs and other business tools. VoIPstudio is a global company that serves more than 15 million minutes of daily talk time toStarting Price: $6/month/user -
7
Smartz Solutions
Smartz Solutions
Smartz Solutions is the disruptor reshaping the contact center landscape. Traditional legacy systems, with their entangled infrastructures and exorbitant fees, have held businesses hostage for too long. Contact centers are tired of being burdened by disjointed systems with hefty price tags and bad customer and employee experiences. We’re redefining the contact centre experience through our AI-powered 360-degree experience platform. We’ve been there. We paid for the legacy systems. We had 15 different systems running (at a snail's pace) at once to be able to run our call centre. We know the pain of not being able to find data quickly enough (sometimes at all) to help customers. And we sure know what it’s like to have employee information in multiple systems; never showing a clear view of the business. Losing money, opportunities and patience doesn’t have to be how you continue to run your call centre. Through a comprehensive tech stack, you will finally have your entire customStarting Price: $55.00/month/user -
8
VoIP Office
VoIP Office
VoIP Office, a leading provider of Cloud based communications, makes it affordable and easy to connect to anyone, anywhere in the world. Our communications solutions meet the needs of any type of business in any industry, from home offices to large enterprises. VOIP OFFICE is a new-generation cloud based communications provider that offers all the features of your traditional PBX along with the latest functionality enabled by the use of VoIP technology. VoIP Office integrates easily with your business applications, seamlessly integrating your desktop and your office into one interconnected system.Starting Price: $24.95 per month plus taxes -
9
VitalPBX
VitalPBX
VitalPBX is a unified communications PBX system based on Asterisk and Linux (Centos 7). VitalPBX provides a robust and scalable platform, which will allow you to manage your PBX in an easy and intuitive way. VitalPBX is built to be easy to use with tooltips across the system and a coherent user interface throughout. A telephony system should be aware of security hazards and avoid them. VitalPBX offers various levels of protection against cyber threats in the VoIP world.Starting Price: $100 -
10
Telzio
Telzio
From startups to enterprises, companies worldwide rely on Telzio for mission-critical phone services. Easy to deploy, manage, and scale. Telzio Call Flows will have you up and running with a complete business phone system in 5 minutes. Our interface gives you complete control so you don't have to call a tech to make a change to your phone system. It's so easy, you can do it yourself. Expect great customer service from our team, dedicated specialists who know your account, and fast response times you can count on.Starting Price: $50/month for unlimited users -
11
Issabel
Issabel
Issabel is an open source unified communications platform that consolidates IP communication services into a single system, surpassing the constraints of a conventional PBX by integrating features such as call center capabilities, email, management reports, fax, video call meetings, audio recording, and CRM and platform integrations. It offers a robust, flexible, and easy-to-use call center module designed to efficiently automate and manage contact centers, handling both incoming and outgoing call campaigns through an intuitive agent console and call management interface. Issabel streamlines PBX solutions for service providers, enabling the management of multiple clients from a single instance, simplifying administration without the need for separate servers for each client. To enhance functionality, Issabel supports add-ons crafted to seamlessly integrate with the platform, adding features that interact with telephony to improve customer service and automate actions for support.Starting Price: Free -
12
HoduPBX
Hodusoft
HoduPBX is the ultimate solution for business communication. Its unprecedented user interface with optimal user experience facilitates businesses to communicate with the end users efficiently. This software offers world-class connectivity within an office and from the remote location leaves communication an uninterrupted process. Get HoduPBX and empower agents’ work management with multitasking abilities and efficiencies. With 1000+ concurrent calls and 10,000 extensions, our IP PBX software is one of the best choices for business communications. Here are HoduPBX’s key features: Multi-Tenant Auto Provisioning Least Call Routing (LCR) Real-time Analytics and Reports Queue Monitoring Multi-level IVR BLF & Presence Prepaid & Postpaid Billing Payment Gateway Integration Audio-conferencing SMS Hosted IP PBX Software -
13
Cradle
Cradle
With Cradle, you can now talk to your customers like humans. Cradle isn't just a standard phone system (although it does the standard stuff) our features are changing the way businesses communicate with customers. You have lots of data on your customers, but how often do you and your team have the right data when you need it? With our HubSpot integration, you can capture all call activities in HubSpot. Bringing reporting from non-digital media into the spectrum, you get the full picture of your marketing ROI. Keep your sales team in HubSpot, as well as their phone activity, to focus their time on the highest value tasks and ensure they're delivering value for your business. With our three-step onboarding, we make it easy for you to get started so you can begin talking to your customers quickly!Starting Price: $14.99 per month -
14
Softdial Contact Center
Sytel Ltd
Softdial Contact Center™ (SCC) is Sytel’s flagship suite of feature-rich contact center applications and services, currently driving 50,000+ users in 50+ countries. Maximize agent productivity, with high-performance predictive dialing, and a tailored omnichannel desktop allowing work on several open text sessions at once. As a platform, SCC is uniquely flexible, allowing users to either run the full suite or choose which modules to deploy. It can be extended via SCC’s comprehensive, robust APIs, modified, adapted and even white-labeled to fit any business requirements. SCC manages communication on all media channels – voice, chat, email, messaging – automatically blending and load balancing contact sessions between all agents, all queues and campaigns with its Automatic Session Distributor (ASD®). -
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Momentum Telecom
Momentum
We unleash human momentum with collaboration, connectivity, and communications technology. All business is human—and when custom technology empowers human ingenuity, people and companies thrive. High performing teams do more, achieve more, and win more. Companies become agile, efficient, and resilient. Our team takes pride in making technology easy and cost effective. We love what we do—and it shows in the way we partner with you, from our first conversation to ongoing post-install support. Working with over 30,000 customer locations in 65+ countries, we deliver straightforward, secure, and scalable global managed services and advanced collaboration and communications solutions. Together let’s build your human momentum. More at gomomentum.com
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