List of the Top 25 Business VoIP Providers for Microsoft 365 in 2026

3CX is a versatile, software-driven IP PBX built on open standards that delivers comprehensive Unified Communications straight out of the box. It caters to businesses of all sizes and across various sectors, offering a full suite of features that range from mobility and presence indicators to sophisticated call center functionalities, all at a significantly reduced cost. This platform is particularly well-suited for remote work environments, featuring mobile applications, video conferencing capabilities, and live chat integration for websites. Installation, management, and maintenance of the PBX are straightforward, allowing users to easily handle it themselves on their own hardware, a dedicated server, or via a cloud environment. Alternatively, users can opt for 3CX's hosting services to simplify their setup even further. With its user-friendly design and extensive feature set, 3CX empowers companies to enhance their communication strategies effectively.

Dialpad provides organizations with a contemporary VoIP service that transforms outdated landline systems into a comprehensive, internet-driven communication platform. Teams utilizing Dialpad can enjoy high-quality voice calls, send SMS/MMS messages, and maintain connections across various devices, whether they're using a desktop or mobile. Additionally, as a fully integrated communications solution, Dialpad includes features such as video conferencing, team messaging, and AI-enhanced productivity tools. This leads to a more adaptable and budget-friendly option compared to conventional phone systems, allowing businesses to engage with customers on their preferred channels.

With an emphasis on providing "User-friendly Unified Communications," the Yeastar P-Series Phone System presents businesses, regardless of their scale, with a comprehensive solution that includes calling, video conferencing, messaging, and seamless integrations right from the start.

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. Moreover, NXTPulse provides robust conference bridges, facilitating effective communication among all participants. 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 connection between your organization and the NXTPulse cloud, ensuring that your communications remain secure. In addition to its numerous productivity-boosting features designed to enhance customer service and operational efficiency, NXTPulse also has the potential to significantly reduce your telecommunications expenses. This combination of benefits makes NXTPulse an invaluable asset for any business looking to thrive in a competitive landscape. 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.

You can oversee all your business functions remotely through a single platform. By utilizing dependable voice and video services, along with faxing, messaging, and conferencing capabilities in the cloud, you can enhance productivity and streamline communication. This flexible, all-in-one cloud communication and contact center solution is tailored for small and medium-sized enterprises. Additionally, you have the option to customize your settings and features, ensuring your conference calls operate according to your preferences, with support for up to 100 participants. Our VoIP phone system or hosted PBX serves as a modern alternative to traditional small business phone systems, utilizing your broadband connection to facilitate seamless communication. You can effortlessly share your screen and stream HD video for any meeting size, whether large or small, without the need for downloads. Furthermore, you can send and receive SMS and MMS messages directly online, as well as manage internet faxing directly from your dashboard. Infinite provides the latest VoIP phones, which come fully set up and ready for immediate use; simply turn on your device to start your conversations. With these tools at your disposal, your business can thrive in a connected world.

KrispCall enables users to handle all their telecommunication requirements—be it personal, business, or corporate—through a single application available on Web, Android, and iOS platforms. From the convenience of your home, you can obtain international phone numbers. The platform simplifies the process of generating international numbers, including national, local, shortcode, and toll-free options, across more than 100 countries, regardless of how quickly you need them. You have the ability to efficiently oversee your call logs as well. With KrispCall's integrated phonebox, all your business calls, voicemails, and recorded conversations can be managed and monitored conveniently in one location. You can connect with your international clients using local numbers, which helps in building their trust. KrispCall provides affordable international numbers tailored for your business needs. Furthermore, our customizable widget allows for straightforward customer outreach, as clients can reach you effortlessly by clicking on the KrispCall widget embedded on their website, enhancing your overall accessibility. This seamless integration not only improves communication but also boosts your professional image.

Thirdlane is a comprehensive multi-tenant communication platform that combines VoIP calling, unified messaging, video conferencing into powerful solution. Designed for both enterprises, MSPs, telecom providers and resellers, it offers unmatched flexibility, cost-effectiveness, and scalability. Highlights: - PBX with advanced call routing, voicemail, and conferencing. - IVR, call queues, recording, and analytics. - CRM integrations with Click-to-Call and caller ID screen pops. - Thirdlane Connect desktop, web, and mobile apps for collaboration. - Flexible choice: cloud-hosted or on-premises. - White-label Who it’s for: - MSPs and UCaaS providers launching branded communications. - Enterprises seeking a customizable phone system with CRM integration. - Telecom providers and resellers looking for modern PBX offerings. Thirdlane delivers a complete, future-proof phone system for organizations that want to unify communications and scale without compromise.

The cloud phone solution is specifically built for the Zoom platform, offering a modern user interface paired with enterprise-grade features that enhance voice communication. The Zoom administrator portal facilitates user management and provisioning, along with monitoring call quality and usage metrics. With a globally distributed cloud infrastructure, Zoom ensures secure HD Voice with exceptional reliability suitable for enterprises. Users can seamlessly make and receive calls, share content, and engage in video meetings, while also having the ability to send chat messages through Zoom's desktop or mobile applications. Additionally, phone calls can be effortlessly upgraded to Zoom Meetings, eliminating the need for participants to disconnect or dial into a different conference bridge. Native applications for Windows, MacOS, and Android are designed for ease of use and optimize both voice and video quality. As the range of countries offering local phone numbers continues to expand, customers looking for simplified global telephony management can easily port their numbers to Zoom to streamline their communications. This comprehensive integration allows businesses to enhance collaboration and connectivity across various regions.

GoTo Connect enhances your business's professional image significantly. As a comprehensive, cloud-based business telephone system, GoTo Connect supports countless organizations across diverse sectors and sizes in elevating their communication methods and attaining enhanced success. The Hosted VoIP service from GoTo Connect offers an extensive array of functionalities that can effectively substitute traditional landline phones, including unlimited voicemail options and automated attendants, making it a versatile choice for modern businesses. With its robust features, GoTo Connect not only streamlines communication but also fosters collaboration within teams, ultimately driving productivity and growth.

VoIPco provides an extensive range of services and an impressive array of features aimed at enhancing your company's telecommunications experience. By utilizing VoIPco, businesses can modernize their phone systems and potentially see a return on investment within 6 to 12 months. You can utilize your telecom services across various devices connected to your IT network, such as desktop phones, mobile devices, and computers. The Unified Communications (UC) system integrates voice, video, chat, and contact center/IVR applications smoothly, leading to significant improvements in communication and overall productivity. Our robust software and services empower you to manage your account effectively while seamlessly integrating our premium cloud communication solutions, ensuring that your business operates efficiently and remains competitive in today's fast-paced environment.

EveryDay Voip integrates voice calls, video conferencing, meetings, and messaging into a single, dependable PBX platform. Our service is crafted to ensure that you remain connected to your clients from any location globally, allowing you the flexibility to manage your business on your terms. You can easily install our applications on various devices such as tablets, smartphones, or desktops, enabling you to experience high-definition audio and video with effortless one-click operation. Collaboration becomes seamless with features like unlimited SMS, team messaging, and additional tools that enhance communication. Our advanced voice services are not only scalable and secure but also user-friendly. As a prominent provider in the realm of international carrier services, EveryDay Voip delivers top-notch wholesale solutions to communication service providers across the globe, boasting over 1,000 interconnections that serve a diverse range of entities from public telecoms to local VoIP suppliers. By implementing innovative strategies that promote mutual success, we aim to maintain a competitive edge in the industry. Our commitment to excellence ensures that your communication needs are met efficiently and effectively.

VoIPstudio presents a top-tier VoIP phone solution priced for everyday consumers, ensuring the high standards of quality and security that businesses expect. It combines a wealth of innovative features and functionality with flexibility, scalability, and an exceptional user experience, all supported by a dedicated customer service team that operates across multiple channels. Tailored for a global audience, VoIPstudio is designed to function seamlessly across multiple sites and countries, utilizing cloud-based distributed hosting to offer the responsiveness and dependability essential for enterprise clients. This makes it an ideal choice not only for individual users but also for organizations with extensive extension needs, including various sectors such as media, call centers, software development, and meteorology. Customers benefit from the solution's adjustable capacity, which allows for easy addition or removal of users, ensuring they only pay for what they utilize without incurring costs for unnecessary capacity. Moreover, the platform is built to accommodate sudden increases in traffic, making it a robust option for businesses of all sizes. VoIPstudio’s offerings include over 40 advanced features and services available in every plan, such as number portability, call recording, conference calls, internet failover protection, interactive voice responses, call parking, video calls, video conferencing, and many more, enhancing communication possibilities for all users. This comprehensive feature set positions VoIPstudio as a leader in the VoIP market, catering to diverse communication needs effectively.

A comprehensive cloud-based solution provides a range of communication tools, including voice, fax, text messaging, and both audio and video conferencing, which significantly boosts employee productivity whether they are at their desks or telecommuting. This platform facilitates seamless connectivity across various devices such as smartphones, tablets, softphones, or desktop IP phones, thus enhancing customer interaction capabilities. By consolidating calls through a single phone number, organizations can more efficiently direct incoming inquiries to the right team members, simplifying the process for clients trying to connect. The system also comes equipped with features like instant local numbers, toll-free lines, internet faxing, and customizable services based on the time of day. Moreover, it integrates video meetings and collaborative online tools, allowing businesses to bypass the usual expenses related to maintenance, software upgrades, installation, and support that come with conventional systems. This intuitive communication platform allows companies to prioritize customer service over juggling multiple communication tools and channels. With the option to maintain up to three unique business numbers—one primary local number, one toll-free number, and an additional local number specifically for faxing—organizations can significantly enhance their availability and outreach. Ultimately, this cohesive service not only streamlines communication but also contributes to improved overall operational effectiveness, allowing businesses to thrive in a competitive landscape. Additionally, as teams become more mobile, the flexibility provided by this platform is essential for adapting to modern work environments.

Discover a reliable and secure solution specifically designed for the needs of your online enterprise. All the essentials you require to launch your business are readily accessible. Benefit from an intuitive control panel that simplifies the management of your website. Our experienced support team is always on hand to provide assistance whenever you need it. Additionally, you will have access to a vast collection of pre-configured web applications that are ideal for enhancing your site. By choosing to collaborate with Sherweb, your trusted partner in the cloud, you will be pleasantly surprised by the opportunities that await. Our all-encompassing cloud management platform is crafted to meet the evolving demands of businesses, empowering IT professionals to leverage adaptable solutions backed by top-notch service from dependable experts. With a strong focus on cloud technology, IT professionals can feel confident knowing that our ever-expanding range of innovative offerings has been meticulously selected and vetted, featuring exclusive proprietary software that cannot be found elsewhere. We deliver a solid and sophisticated platform that seamlessly balances time efficiency with savings on costs. In addition, you can streamline and connect almost any process by utilizing our cutting-edge APIs, which guarantees that your operations are both productive and effective. When you partner with Sherweb, the horizon for your online business is not only bright but also brimming with incredible possibilities for growth and success. Embrace the future and let us help you navigate your journey ahead.

We drive human progress through teamwork, connectivity, and advanced communication technologies. Every aspect of business revolves around people, and when tailored technology enhances human creativity, both individuals and organizations flourish. Teams that excel accomplish greater feats, reach higher goals, and experience increased success. Organizations become more agile, efficient, and adaptable to change. Our team is dedicated to simplifying technology and keeping it affordable. Our passion for our work is evident in how we collaborate with you, starting from our initial discussion and continuing with ongoing support after installation. Serving over 30,000 customer locations across more than 65 countries, we provide clear, secure, and scalable global managed services along with sophisticated collaboration and communication solutions. Let's work together to enhance your human potential and foster innovation. By combining our expertise with your vision, we can create remarkable outcomes.

Spoke stands out as the premier platform designed for managing intricate, high-stakes, and regulated discussions. It effectively enables employees to articulate and gather essential information, facilitating deal progression and enhancing customer satisfaction. By seamlessly integrating with various tools, Spoke personalizes interactions, boosts efficiency, and guarantees adherence to compliance standards. With over 250,000 conversations taking place daily, it offers a suite of features including voice calls, SMS, WhatsApp integration, a shared team inbox, customizable routing options, personalized IVRs, caller analytics, and much more. **The Challenge** Currently, a limited number of employees possess the training or capability to engage in complex, context-rich, and tailored conversations with customers. **The Answer** Spoke equips every team member with the necessary knowledge and skills to conduct high-quality, compliant conversations that yield favorable outcomes for both customers and the business. To accomplish this, Spoke Phone merges the advantages of traditional business telephony, costly contact centers, and top-notch business process automation into a user-friendly interface accessible via mobile or desktop devices. This integration of customer data, processes, and automation into communications—whether through calls, SMS, or WhatsApp—ensures that every interaction is informed and effective, ultimately transforming the way businesses connect with their clients.

Designed for both large enterprises and emerging companies, the Yay.com business phone system presents a flexible and innovative communication platform that not only cuts costs but also enhances organizational adaptability. With user-friendly softphone applications compatible with your existing devices, remote and hybrid work becomes effortless and efficient. You can collaborate and communicate from anywhere in the world, allowing you to operate in a manner that suits your needs best. Yay excels in supporting distributed teams, whether they are in the office, at home, or on the move. Take advantage of a wide array of business functionalities, including CRM integrations, IVR call menus, call queuing, and much more. Start with a free trial today and discover how Yay.com can empower your business to flourish and succeed. Additionally, with its comprehensive tools and features, you can optimize your team's performance and improve customer interactions effectively.

A single call can link all aspects of your business operations. Fusion Connect serves as your Managed Services Provider, delivering comprehensive internet solutions for SDWAN, business VoIP (UCaaS), internet connectivity, secure networking, and various other needs. Their Business VoIP service features Internet-based faxing and softphone capabilities, ensuring compatibility with both Windows and Mac systems, as well as a range of other devices to maximize usability. Additionally, Fusion Connect is dedicated to enhancing your business communication and connectivity experience.

Are you in search of a cost-effective and dependable phone system for your business? Imagine having the ability to focus more on your customers rather than spending time on hold with your service provider for every minor adjustment. FluentStream is the solution you need! Our dedication lies in offering the finest business communication platform available. We offer no-contract options for every account, along with round-the-clock client support. Our team will assist you throughout the onboarding experience, recognizing the challenges that can come with setting up a phone system. We're more than willing to handle the complex tasks so you can focus on what matters most. This commitment to ease and support is what makes working with us a seamless experience. With FluentStream, you can enjoy peace of mind knowing we prioritize your business's communication needs.

Voxloud emerges as Italy's first cloud-based phone system, integrating AI technology to boost productivity and conserve precious time. When you switch to Voxloud, you can keep your current landline number without incurring any extra charges. The activation process is incredibly straightforward, allowing you to establish your new landline number and phone system in a mere 59 seconds, which means you can begin professional communication right from day one. Transitioning from conventional phone systems to Voxloud signifies adopting a more intelligent working method with their cutting-edge cloud phone solution. This all-in-one telephone system is designed to cater to the communication needs of small and medium-sized enterprises. Improve the management of your incoming calls by implementing a customizable interactive voice response (IVR) system that offers various levels of interaction. Enjoy the ability to work flexibly from anywhere, at any time, using our intuitive apps and VoIP devices on your laptop, tablet, or smartphone. Adding users from diverse locations and modifying your phone system settings is easy and can be done with just a few clicks, ensuring it adapts to your business's changing needs. Additionally, enhance your phone interactions through the leading CRM integrations available, creating a well-rounded solution for all your communication requirements. Consequently, Voxloud empowers your team to collaborate efficiently, regardless of their physical locations, fostering a truly modern approach to communication. With Voxloud, businesses can expect both convenience and innovation, making it an ideal choice for the future of work.

UniVoIP's cutting-edge software and solutions enhance productivity, streamline operations, and boost performance, all while adapting to and exceeding the current challenges in business communication. The flagship offering, OfficeConnect™, boasts over 500 features, including PBX, Omnichannel Contact Center, and Unified Communication capabilities, accessible through both private and public networking options within a multi-instance infrastructure. Additionally, UniVoIP provides UniBridge, a robust solution for high-definition audio, video, and web conferencing, which includes features such as screen sharing and meeting logs, complete with timestamps and concise summaries, all without the need for software installation. This comprehensive suite of tools ensures that businesses can communicate effectively and efficiently in an increasingly digital world.

CallHarbor provides UCaaS solutions specifically tailored for small to medium-sized enterprises. Our platform not only delivers insightful statistics about employee performance but also seamlessly integrates with your current applications, ensuring you can utilize all features regardless of your location. We go beyond facilitating outbound communications; CallHarbor partners with a variety of sectors, offering top-tier systems designed to enhance communication efficiency. With our exceptional mobile and web applications, you can maintain productivity from virtually anywhere. Our services encompass everything from making calls on your desktop to managing voicemail through email, as well as connecting with friends via your mobile device. CallHarbor imposes no restrictions on the number of Queues, Auto-Attendants, Parking Lots, or Users in your system, empowering you to expand from a small scale to a larger operation. We stand by you throughout your growth journey, alleviating concerns about dropped calls thanks to our dependable geo-redundant servers. Moreover, we provide over 25 premium features included in your initial plan for a single flat rate, ensuring that you have all the tools necessary for successful communication. With CallHarbor, you can focus on your business growth while we handle the complexities of communication infrastructure.

Avaya Cloud Office serves as a robust communication solution that operates entirely in the cloud, merging voice, video, messaging, meetings, and collaboration tools into an integrated platform. It successfully connects in-office, remote, and mobile workers across different devices, ensuring seamless and consistent communication. Featuring capabilities such as business phone lines, voicemail transcription, team messaging, and document sharing, it greatly enhances both productivity and collaborative efforts. Additionally, the platform prioritizes security through advanced encryption and integrates with over 100 business applications, including Salesforce, Office 365, and G Suite, aiding organizations in streamlining their workflows and improving overall effectiveness. Designed to meet the dynamic demands of contemporary enterprises, this versatile solution evolves alongside businesses to maintain relevance in a fast-paced environment. Its user-friendly interface further encourages adoption and maximizes the potential for teamwork and communication efficiency.

Collaborate effortlessly with your team while maintaining seamless connections with clients. No matter where you are, leverage any communication method across a variety of devices. A comprehensive platform encompassing telephony, PBX, messaging, meetings, and contact center features allows for easy engagement with both colleagues and customers. Empower your workforce with tools designed to boost their productivity. This all-in-one application simplifies customer interactions and fosters team collaboration. Agents can operate from any location while providing outstanding service to clients. Optimize your workflow with a single, robust app for calls, messaging, and virtual meetings, facilitating real-time collaboration without disruption. Integrate intelligent features that clearly convey your availability to your colleagues. Strengthening relationships and enhancing productivity becomes a straightforward task. Access a full suite of voice communication options, including both fixed and mobile telephony, all organized in one place. Regardless of the device or platform, your calling experience remains uniform, whether through cellular, PSTN, or internet, ensuring consistent and dependable communication. The ability to connect without obstacles significantly improves both individual and team performance, fostering a more streamlined and effective work environment. Additionally, this unified approach not only simplifies processes but also encourages greater innovation within teams.

We place our clients at the center of all our endeavors, embodying a truly client-centric approach in our organization. Our dedication to ongoing innovation ensures that we deliver solutions that not only boost your current operations but also facilitate your future growth. Whether you're a budding small enterprise or a well-established multinational company, our tailored offerings are designed to meet your specific needs. Updating your Hosted PBX in the Cloud is a breeze; you can make changes from anywhere and see the updates in real-time. Each Virtual Landlines Account comes equipped with our BusinessTalk App, which fosters smooth communication among colleagues, clients, and other contacts. Our platform consolidates a variety of features into a straightforward interface, allowing you to launch training campaigns and execute simulated attacks within minutes. Furthermore, you have the freedom to personalize your templates, landing pages, and simulated attachments, and you can even spoof your own domain to conduct simulations of CEO Fraud attacks, complete with reply tracking to gauge engagement levels. This comprehensive approach not only empowers your organization to effectively defend against potential threats but also enhances overall operational efficiency, reinforcing our commitment to your success. Ultimately, we believe that by equipping you with these advanced tools, we contribute to a safer and more productive business environment.