Best Business VoIP Providers for Linux of 2025

3CX

3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry 3CX can accommodate every need; from mobility and status to advanced contact center features and more, at a fraction of the cost. Ideal for companies working remotely, 3CX includes mobile apps, video conferencing and website live chat. Installation, management and maintenance of the PBX is so easy that you can effortlessly manage it yourself, whether on an appliance or server at your premise on Windows, Linux or in the cloud. Alternatively you can choose to have it hosted by 3CX for a completely hassle-free solution.

1,170 Ratings

Starting Price: Free for up to 10 users

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VirtualPBX

VirtualPBX Business VoIP is a premier solution in the cloud communications industry, designed to meet the needs of businesses of all sizes. With over 27 years of experience, VirtualPBX delivers a robust and reliable VoIP service with 99.999% uptime, advanced features, and exceptional customer support. As a US-based, privately held company, VirtualPBX is dedicated to providing award-winning 24/7/365 customer service and scalable solutions that grow with your business. Small businesses can also benefit from average savings of 40-80%, making VirtualPBX both a cost-effective and highly reliable choice for business communication.

144 Ratings

Starting Price: $15/month

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Talkroute

What is Talkroute? Talkroute is a UCaaS provider that gives you the ability to utilize your existing phones, web browser, and PCs with our cloud-based virtual phone system. Now you can have the power of an enterprise-level phone system without the upfront cost and maintenance of an expensive on-site system. Making and receiving business calls Our virtual phone system gives you the ability to make & receive calls from any desktop, browser, and smartphone. Texting with your customers Send and receive business SMS and MMS text messages. Our apps make it quick and easy to compose and reply to your customers. Video meetings with your team Video conferencing with up to 100 team & guest participants. Talkroute Meetings gives you the power to record meeting sessions, share your screen, chat via team messenger, collaborate using our whiteboard, & share files.

3 Ratings

Starting Price: $19 per month

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Insider Telecom

Get a business phone system without breaking the bank! We help small businesses in the United States get access to big business tools, while keeping prices within reach. In fact, with Insider Telecom, we provide the equipment as long as you need it. Enjoy features like caller ID, call forwarding, conference calling, intercom, auto attendant, and many more! No big upfront purchase for a complete business phone service. That's the Insider Telecom difference. Our support team knows that you probably don't speak "telephone." So they're trained to listen for and understand the root of your specific need - from training and configuration, all the way to fitting you with a different phone system. We want to be sure you're working with the right platform.

1 Rating

Starting Price: $17.95 per user per month

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T-Max Phone Systems

T-Max

The Hosted Business Phone System PBX will make any company sound and function like a Fortune 500 company. Your company can have all your calls answered by an auto-attendant allowing for callers to choose departments, extensions, dial by name or many other options. If you are working on the go you can have them automatically transferred to your cell phone. T-Max is fully geo-redundant. In other words, our servers are being hosted in a top-notch data centers throughout the United States. We use multiple carriers ensuring maximum connectivity to the PSTN. T-Max uses high-quality desk phones from Polycom & Yealink, with many different models to pick from to fit your unique environment best. We offer reception consoles, agent phones, wireless phones, and conference room phones. Our Hosted Business Phone System is the best choice for the price on the market today. 1-888-245-3483 Departments Extensions Digital Receptionist Voice Prompts Voice Mail Fax Service and Much More

Starting Price: $19.99 Mo/Ext

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NXTPulse

NXTPulse offers cutting-edge innovations that can elevate your business operations significantly. The platform is packed with a variety of features, including seamless integrations with Microsoft Teams, which enhance its functionality. With its extensive capabilities, NXTPulse empowers you to work flexibly from any location at any time. It is compatible with leading platforms such as Office 365 and numerous popular CRMs. You can rely on NXTPulse to manage your hosted voice solutions, freeing you from that responsibility. Regular updates and new features ensure that the platform remains current and effective. Strong SSL security safeguards the connections. 3cx Integrations - M365, Microsoft Teams, Microsoft Dynamics, Google Workspace, Hubspot, Sales force, Connectwise, Freshdesk, Freshsales, Freshworks, Zoho, Zendesk, Pipedrive and much more Self-Managed or Fully Managed options to fit your needs All inclusive licenses and SIP Trunk included No per Minute or per number cost.

Starting Price: $79.99 per month

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CloudTalk

Searching for a smart call centre software? Try CloudTalk.io, a new-generation cloud phone system for SMEs, startups, online stores or call centers (sales and customer service teams). 25+ integrations with favorite CRM, helpdesk or e-commerce tools as Shopify, Salesforce, Pipedrive, Intercom at hand along with a 5-star rated customer success team make it easy to seamlessly migrate or set up your new cloud call centre from scratch. We are rapidly growing every month and we have already successful cooperation with 1000+ companies across the world like DHL, Yves Rocher or Karcher. Try 14 day FREE trial from CloudTalk (no credit card details required).

60 Ratings

Starting Price: $25.00/month (billed annually)

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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!

29 Ratings

Starting Price: $4.95/month

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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.

29 Ratings

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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.

12 Ratings

Starting Price: $2/month

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PBXware

Bicom Systems

PBXware is the world’s first and most mature IP PBX Professional Open Standards Turnkey Telephony Platform. Since 2004, PBXware has deployed flexible, reliable, and scalable Next Generation Communication Systems and VoIP solutions to Small and Medium sized Businesses (SMBs), enterprises, Internet Telephony Service Providers (ITSPs), Call Centers and governments worldwide by combining the most advanced of the latest technologies. Bicom Systems’ softswitch is offered in the Business, Call Center and Multi-Tenant Editions, each supporting specific features maximizing performance, reliability, and expandability.

12 Ratings

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Telnyx

See how the developer friendly Telnyx API can transform your business communications. Telnyx is an all-in-one communication platform designed to be tailored exactly to your needs. We created our network with real-time communications in mind so we can deliver quality calls, messaging, and data around the world. Easily build reliable messaging with our SMS API. Keep your data safe by setting up two-factor authentication using SMS or voice codes. Plug and play your VoIP setup in minutes and get carrier-grade voice with elastic SIP trunks. Our cloud-agnostic approach means you can rest easy knowing you are protecting in case of a network failure. With Telnyx deploy communications exactly to specifications.

8 Ratings

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EnableX Communications APIs

vCloudx

EnableX makes integrating real-time communications into applications and workflows a lot easier. Designed and developed for Service Providers, Systems Integrators, and Developers, it provides a robust, scalable and secure communications platform without the complexity of building and maintaining the network infrastructure. By simply leveraging on EnableX comprehensive sets of programmable APIs and SDKs, developers can rapidly customize and embed all or part of the communication functions – voice, video, SMS and chat – right into existing applications, workflows and systems. Together with the Virtual Number services and advanced features such as AI and NLP, businesses can reach customers globally with an outstanding communication experience.

6 Ratings

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TeliDesk

Lowest priced phone and text service for your small and homebusiness. Why spend a bunch on phone solution for your business? A phone system made simple for everyone. TeliDesk is a self-serve platform that can be configured in as little as 15 minutes. Avoid hassling with phone systems that are complicated and take long to configure. Owning your own business means you’re in control, and your phone service is no exception. Virtual Office enables you to design your own telecom solution based on just what you need, nothing more and nothing less. Online Self-Service means you can easily make changes, anytime or anywhere. Just log in, and go! The more you call, the more you save. As your business grows, so does your discount. Automatic payments via credit card, debit card or PayPal. Prefer to pay cash? No problem. With no equipment to buy or install, our unique Virtual Office enables you to decide where calls ring. Our easy-to-use online interface lets you send calls to any existing phone

3 Ratings

Starting Price: $9.95/user/month

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net2phone

net2phone provides innovative and affordable cloud based telephony software and services to both small and mid-sized businesses and large or multinational enterprises. Our Unified Communications and Contact Center solutions provide advanced features that can be customized to suit your unique business needs while ensuring simplicity through implementation and use. net2phone’s compelling UCaaS offer combines voice, video, chat, and messaging under one platform, includes advanced features and integrations, and unlimited calling to over forty popular destination countries. uContact, net2phone’s omnichannel CCaaS solution, streamlines all voice and digital interactions, enabling contact centers to meet customers in the digital channel of their choice and integrating all touchpoints into a Unified Inbox. Other flagship solutions include SIP Trunking services, native integration with Microsoft Teams, and international connectivity capabilities.

3 Ratings

Starting Price: $17.99/month/user

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Voyced

Hosted VoIP solution with a European focus but with presence in over a 165+ countries. As all our solutions are based on Premium Plus we give you the highest possible quality for the lowest price. All carry all types of numbers, from Geographic to National, TollFree and UIFN, Mobile VoIP, Elastic Pool solutions and much more. We also have our own SoftPhone and will soon be launching other Roaming products too.

2 Ratings

Starting Price: $0.25 per user per month

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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 to

1 Rating

Starting Price: $6/month/user

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KrispCall

KrispCall helps you manage your personal, business, and corporate telephony requirements all from a single app (Web, Android, iOS). Get international numbers right from the comfort of your home. KrispCall helps you own national, toll-free, local, shortcode, and international numbers (for over 100 countries) in no time. Manage your call logs effortlessly. KrispCall’s unified callbox allows you to handle and monitor your business calls, recorded conversations, texts, and voicemails all from a single window. Earn trust of your international clients by calling them through their local numbers. KrispCall offers international phone numbers for your business at the most affordable price. With our embeddable widget, you are just a click away from your customers. Clients can now call you directly without hassles by simply clicking on the KrispCall’s widget embedded in your website.

1 Rating

Starting Price: $15 per user per month

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AVOXI

The effective, affordable, and easy-to-use cloud-based call center software, AVOXI Genius. Easily manage your business communications from an intuitive, web-based contact center. AVOXI Genius is the first platform to integrate your contact center solution with your voice service, with virtual phone numbers available for instant activation in 170+ countries. With plans starting at $19.99 per user, AVOXI Genius is one of the most affordable solutions worldwide! Get 2 months free--limited time only.

1 Rating

Starting Price: $19.99/month/user

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Monster VoIP

Monster VoIP was established to distribute superior voice quality and maximized uptime to customers from here in L.A. to New York to Washington, D.C. to Houston to Dallas to Chicago and beyond, while delivering unparalleled service and customer satisfaction. We started by setting up data centers in Las Vegas, New York, Dallas, and Minnesota to ensure geo-redundancy, with all endpoints multi-registered at all four facilities. (This is just a fancy way of saying that multiple locations means you can expect amazing voice quality and unparalleled business phone uptime.) We then made sure to offer a complete suite of communication tools in one platform. This means you and your team only have to learn our easy-to-use user interface for all of your communication efforts. To make good on our customer satisfaction promise, we then decided to provide personalized setup and ongoing 24/7/365 support to every business VoIP customer that walks through our (virtual) doors.

1 Rating

Starting Price: $27 /month

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Zoom Workplace

Zoom Communications

Unified business communication and collaboration tools. Reimagine how your teams work with an all-in-one, open collaboration platform with AI Companion. Streamline communication, improve productivity, optimize in-person time, and increase employee engagement, all with Zoom Workplace. Make meaningful connections with a unified solution for meetings, team chat, whiteboard, phone, and more. Reduce wasted time going back and forth between applications. Zoom Workplace provides you with a seamless, automated user experience from your mobile device or desktop Streamlined features give you the ability to initiate a call or meeting from a chat, collaborate on a whiteboard from your desktop or room, and see whether a co-worker is available with presence.

1 Rating

Starting Price: $13.32/user/month

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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.

1 Rating

Starting Price: $24.95 per month plus taxes

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Yeastar Cloud PBX (legacy)

Yeastar

Yeastar Cloud PBX (legacy) is a fully-featured future-ready phone system ideally suited for SMBs. With Linkus UC Clients, you will gain easy access to enhanced call efficiency and remote working agility across any device at your choice. With 100% hosted deployment, there is no upfront hardware cost and the in-house management overheads are reduced to almost nothing. Together with easy to use and full compatibility features, any migration or upgrade to Yeastar’s hosted solution will be as easy as a breeze. * Please note that Yeastar P-Series PBX System is the new Yeastar Cloud PBX that comes with versatile call center features and unified communications features.

1 Rating

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PhoneSpeak

Your satisfaction is guaranteed, or your money back. You save thousands of dollars per year. No need to install, manage or maintain anything. Everything is in the cloud and instantaneous. Our data centers are hosted with Equinix, in case you don't recognize the name: They are one of the most expensive, reliable and secure providers with global footprint ensuring optimal call quality every time. Unlimited calling queues and hunt groups. Intelligent multi-level IVR capability lets you instantly route calls according to your unique business needs. Crystal clear HD call quality with all the bells and whistles. Call recording, call waiting, coivemail, HD voice quality, and everything else you want and expect from your phone service.

1 Rating

Starting Price: $ 9.99 per user per month

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Sherweb

A secure and reliable solution for your online business. Everything you need to get started. A user-friendly control panel to manage your website. Experienced support technicians. Access to a huge library of pre-configured web apps for your website. With Sherweb as your trusted cloud partner, you’ll be surprised by what you can achieve. Our full-fledged cloud management platform, driven by evolving business needs, empowers IT professionals to leverage agile solutions paired with 5-star service by trusted experts they can count on. We’re born in the cloud – IT folks rest easy knowing our ever-expanding portfolio of innovative products has been hand-picked and pre-vetted, including a selection of proprietary software you won’t find anywhere else. We bring you a mature, powerful platform that doesn’t make you choose between saving time and saving costs. Automate and integrate just about anything, leveraging our cutting-edge APIs. 

1 Rating

Starting Price: $7.25 per month

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Vitel Global

When it comes to choosing how to communicate with customers and clients, organizations realize the importance of having a phone line. Our cloud-based telephone solution gives you superior Sound Quality, Call Recording, Conference Bridging and other quality add-on experiences. Our team of expert Engineers provide technical support, helps you complete the setup, and handles all other queries or concerns you may have. By choosing our cloud based technology to manage your call requirements, you can reduce up-front capital expenditure, eliminate system management expenses and much more. Travelling? Don't want to carry your office phone with you but want the calls to come along? You can now have all your calls routed to your Cell Phone when you are not on your desk.

1 Rating

Starting Price: $24.99/month/user

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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

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OnSIP

Junction Networks

OnSIP delivers powerfully simple business communications services to more than 100,000 customer accounts. We’re proud to provide the benefits of an on-demand phone system without the high cost, burden, and inflexibility of traditional phone systems. With unprecedented pricing flexibility and no contracts, you can customize your communications by adding users and features and enjoy enterprise-level communications without commitment. Set up is easy and backed by free onboarding and award-winning, U.S-based support. Unlimited plans include a variety of features – voicemail to email, ring groups, call parking, music on hold, video conferencing, call recording, dial-by-name directories and free SIP phones for 5+ users. OnSIP’s platform is built on patented, geographically distributed technology to provide 100% redundancy and massive scalability. Enjoy the confidence that your phone system is always up and always on to keep your teams connected. Sign up for a free trial today!

Starting Price: $18.95 per month

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2600Hz

An unrivaled UCaaS solution designed to empower Service Provider success. Differentiate your brand and offering in the market with a completely customizable, white label solution. KAZOO is 2600Hz's turnkey UC platform, offering the flexibility you need to provide a superior communication experience. Give your customers a communication solution that will make them successful. 300+ APIs enable you to customize a solution to help your customers do business better. White label your solution to build and maintain your brand recognition in the market. Low upfront costs let you get started quicker and stay cost competitive. Reliability and geo-redundancy ensures your customers are always online. Mobile ready lets your customers get business done when and where they need to. KAZOO is a multi-tenant platform and gives you the ability to open your sales channels. Bring on resellers, go direct, or have an agent model.

Starting Price: $3.50/month

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Voipfone

Total flexibility, choose pay as you go, mix and match or an all-inclusive fully-featured plan, either way you can have exactly what you need from a modern, cloud-hosted internet phone service. All online, all controlled by you, all instantly available. No site visits, no installation, no maintenance, just plug and go. Voipfone starts for as little as £1 per month, with many clever features thrown in for free. Voipfone provides award-winning, reliable, and inexpensive advanced cloud-based internet phone services specifically designed for small businesses. Anyone can use Voipfone, you could be a brand new start-up simply needing a new phone number, a growing business needing a flexible way of supporting new staff or homeworkers, an established business needing to replace an obsolete office PBX, or switchboard. With Voipfone, you can move your phones to the cloud and have a maintenance-free, cloud-hosted VoIP PBX phone system that can be set up simply, quickly and cheaply.

Starting Price: $1.38 per month

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Best Business VoIP Providers for Linux

Compare the Top Business VoIP Providers for Linux as of October 2025

What are Business VoIP Providers for Linux?