Best UCaaS Platforms for Microsoft 365

Find and compare the best UCaaS platforms for Microsoft 365 in 2026

Use the comparison tool below to compare the top UCaaS platforms for Microsoft 365 on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    Intermedia Unite Reviews
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    Intermedia Unite is an all-in-one business communications and collaboration platform designed to keep employees connected and responsive across locations, devices, and teams. The solution combines cloud phone service, video meetings, team messaging, file sharing, customer engagement tools, and productivity features into one integrated platform. By consolidating multiple communication tools, Unite reduces app switching and gives employees a simpler way to call, meet, chat, share files, and engage customers from desktop or mobile devices. Its enterprise-grade calling system includes more than 100 voice features that support professional business communications and consistent customer interactions. The platform also supports enhanced Microsoft Teams experiences, helping organizations extend communication capabilities within their existing collaboration environment. AI features such as transcription, summaries, and conversation insights help users retain important information, identify follow-up actions, and improve team efficiency. Mobile and desktop apps allow employees to maintain a consistent business identity whether they are in the office, remote, or on the go. Backed by strong uptime commitments and J.D. Power-certified support, Intermedia Unite is built for reliability and ease of use. By unifying communications, collaboration, and engagement, Unite helps organizations increase productivity while improving the way teams serve customers.
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    Yeastar P-Series PBX System Reviews
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    Yeastar's P-Series Phone System is designed with an emphasis on "Easy-first Unified Communications," providing businesses of various scales with an all-encompassing solution for voice calls, video conferencing, messaging, and seamless integrations right from the start.
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    Zoom Reviews
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    Zoom

    Zoom Communications

    $14.99 per user per month
    573 Ratings
    Zoom Meetings & Chat allows for enterprise video conferencing that includes real-time messaging and content sharing. Video conferencing and messaging made easy across all devices. Facilitate adoption with meeting capabilities that make it simple to join, start, and collaborate on any device. Zoom Meetings syncs to your calendar system and provides enterprise-grade video conferencing on both mobile and desktop. All-hands meetings, internal and external communications, trainings, and all-hands meetings can all be done through one platform. With support for up to 1000 participants and 49 videos per screen, HD video and audio can be added to your meetings. Multi-participants can share their screens simultaneously, and co-annotate to make it more interactive. End-to-end encryption of all meetings, role-based security, password protection and waiting rooms. You can also place attendees on hold. You can record your meetings locally or to cloud with searchable transcripts. Zoom offers HIPAA-compliant healthcare plans.
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    Microsoft Teams Reviews
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    Microsoft Teams

    Microsoft

    $12.50 per user per month
    187 Ratings
    Today's intricate business challenges require collaborative efforts from dedicated teams. To assist you and your team in mastering the art of effective collaboration, we have developed a comprehensive online guide. When you establish a collaborative environment for discussion and decision-making, the potential for success expands exponentially. Microsoft Teams consolidates all necessary resources into a unified workspace, allowing seamless communication through chat, virtual meetings, file sharing, and integration with various business applications. Enhance your team's synchronization with features like group chat, online meetings, calling, and web conferencing. Engage in collaborative document editing using integrated Microsoft 365 (formerly Office 365) tools such as Word, Excel, PowerPoint, and SharePoint. You can also incorporate your preferred Microsoft applications and third-party services to facilitate continuous business progress. Teams offers robust end-to-end security, comprehensive administrative control, and ensures compliance—all backed by Microsoft 365’s capabilities. Designed to accommodate various types of groups, Teams provides a free version with no commitments, as well as an option to access it within a superior suite of productivity tools. Embrace the power of teamwork and unlock new opportunities for innovation and growth.
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    Dialpad Connect Reviews
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    Dialpad Connect is a comprehensive AI-driven communication platform that unites voice, video, and messaging channels to improve both internal teamwork and customer engagement. The platform provides smart features such as live call transcription, voicemail transcription, AI-powered call recaps, and recommended next steps, allowing users to be fully present in conversations without missing key details. It offers deep integration with leading business applications including Salesforce, Microsoft Teams, Zendesk, and Google Workspace, creating a seamless experience across tools. Built on a resilient dual-cloud architecture, Dialpad ensures enterprise-level performance with 24/7 support, disaster recovery, and a 100% uptime service level agreement. Privacy and security are foundational, with certifications like GDPR, HIPAA, ISO, and SOC 2 safeguarding user data. Dialpad Connect supports a broad range of business sizes, from small teams to large enterprises, enabling better communication and faster decision-making. Its AI capabilities also include live coaching for agents during calls and detailed analytics to improve customer satisfaction. This platform empowers businesses to transform every conversation into a valuable opportunity.
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    GoTo Connect Reviews
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    GoTo Connect gives your business a professional boost. GoTo Connect is a cloud-based, feature-rich, business phone system that helps thousands of companies in all industries and sizes to improve their communications and achieve greater success. GoTo Connect Hosted VoIP provides a wide range of features that can replace legacy landline phones such as unlimited voicemail boxes and auto attendants.
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    Fuze Reviews
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    Fuze

    Fuze

    $20 per user per month
    7 Ratings
    Fuze stands out as the leading global platform for cloud communication and collaboration tailored for enterprises. It streamlines the intricacies associated with managing on-premises communication systems, ensuring exceptional voice quality and reliable service through unlimited calling to over 110 countries via more than 50 carriers, making it an excellent choice for businesses with a significant international presence. With a decade of experience supporting clients worldwide, we offer a strategic roadmap to maximize the benefits of your Fuze deployment. This comprehensive application operates flawlessly across various locations and devices, providing deep insights into usage, engagement, and organizational productivity. Upgrade your communication strategies with the premier cloud platform that integrates unified voice, high-definition video conferencing, real-time chat, content sharing, and contact center solutions all in one place, revolutionizing how teams collaborate and connect. Embrace the future of communication with Fuze and unlock the full potential of your enterprise.
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    UNIVERGE BLUE Reviews

    UNIVERGE BLUE

    NEC Corporation

    $19.40/User/Month
    1 Rating
    UNIVERGE Blue® Cloud Services: One seamless and intuitive unified cloud communications and collaboration experience, aligning people, communications, and technology to the company's key initiatives. Key Components: - CONNECT (UCaaS): User-friendly and fully integrated Cloud Unified Communications platform with robust productivity and collaboration features. - ENGAGE (CCaaS): Highly reliable, secure, full-featured, and customizable Contact Center solution that delivers enhanced customer experience. - EXTEND API: API integration platform that connects Contact Center and Unified Communications functions into everyday business applications. - MEET: A powerful meeting solution that provides HD audio & video, interactive screen sharing, collaboration tools, and A.I. capabilities. - SHARE: Provides secure Sharing of the latest document versions without compromising accessibility or functionality. - CONNECT BRIDGE: Extends customers’ NEC phone system investment with cloud-based voice via desktop and mobile apps. - CONNECT+MS TEAMS: The costume version of the CONNECT works side-by-side with Microsoft Teams to enhance business communications.
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    Sherweb Reviews

    Sherweb

    Sherweb

    $7.25 per month
    1 Rating
    Experience a dependable and secure solution tailored for your online business needs. Everything necessary to kickstart your venture is at your fingertips. Enjoy a user-friendly control panel designed for effortless website management. Our team of seasoned support technicians is readily available to assist you. You'll also gain access to an extensive library filled with pre-configured web applications perfect for your site. By partnering with Sherweb, your trusted cloud ally, you’ll be amazed at the possibilities that lie ahead. Our comprehensive cloud management platform, designed to adapt to changing business demands, enables IT professionals to utilize flexible solutions backed by exceptional service from reliable experts. With a foundation rooted in cloud technology, IT professionals can rest assured knowing our continually growing selection of innovative products has been carefully curated and vetted, featuring unique proprietary software you won’t find elsewhere. We provide a robust and mature platform that allows you to balance time efficiency with cost savings seamlessly. Furthermore, you can automate and connect nearly any process by harnessing our state-of-the-art APIs, ensuring your operations are both efficient and effective. With Sherweb, the future of your online business is bright and full of potential.
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    Momentum Telecom Reviews
    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.
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    Fusion Connect Reviews

    Fusion Connect

    Fusion Connect

    $19.95/month/user
    One call can connect your entire business. Fusion Connect is your Managed Services Provider, providing business internet solutions for your SDWAN, business VoIP (UCaaS), internet accessibility, secure networking, and other requirements. Fusion Connect's Business VoIP includes Internet-based faxing and softphones. Compatible with Windows and Mac as well as other devices.
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    FluentStream Reviews

    FluentStream

    FluentStream

    $20.00/month/user
    Are you looking for a business phone system that is affordable and reliable? It would be great to spend more time with your customers than waiting on hold with your provider every little change. FluentStream is your home! FluentStream is committed to being the best business communication system. No-contract plans are available for all accounts. We provide 24/7 client support. We will be there for you throughout the onboarding process. We understand how difficult phone setup can be. We're happy to take over the heavy lifting so that you don't have too. It's all part and parcel of being the easiest business to work with.
  • 13
    UniVoIP Reviews
    UniVoIP's innovative software and solutions drive productivity, efficiency, and performance while embracing and surpassing today's most challenging business communication trends. OfficeConnect™ is the principal product. It delivers 500+ PBX, Omnichannel Contact Center, and Unified Communication features via private or public networking options in a multiinstance infrastructure. UniVoIP also offers UniBridge which is a powerful, high-definition audio, video, and web conferencing solution, screen sharing sharing and meeting logs. It offers summaries, timestamps and summaries and no software download.
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    CallHarbor Reviews

    CallHarbor

    CallHarbor

    $18/month/user
    CallHarbor offers UCaaS systems for small and medium-sized businesses. Our platform gives you statistics about your employees, integrates to your existing applications, allows you to access full functionality even if you are not in the office. We do more than just make outgoing calls. CallHarbor works with companies in many industries and provides industry-leading systems to improve communication workflow. CallHarbor offers top mobile and web apps that allow you to work from anywhere. We have everything you need, from making calls on your desktop to checking your voicemail in an email, to calling your friends from your mobile device. CallHarbor doesn't limit the number of Queues or Auto-Attendants, Parking Lots or Users that your system can have. This allows you to grow small and start big. We are there for you every step of your journey. You don't need to worry about dropped calls because we have reliable geo-redundant servers. We offer 25+ world-class features as part of your original plan and one flat rate.
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    Avaya Cloud Office Reviews

    Avaya Cloud Office

    Avaya

    $19.99/user/month
    Avaya Cloud Office is a comprehensive cloud-based communication platform that integrates voice, video, messaging, meetings, and collaboration tools into one cohesive system. It effectively links office-based, remote, and mobile employees across various devices, enabling uninterrupted and uniform communication. With functionalities such as business phone numbers, voicemail transcription, team messaging, and document sharing, it significantly boosts productivity and teamwork. The platform also places a strong emphasis on security through encryption and connects with more than 100 business applications, like Salesforce, Office 365, and G Suite, which assists companies in optimizing their workflows and enhancing overall efficiency. This all-in-one solution is designed to adapt to the evolving needs of modern businesses.
  • 16
    ZIRO Reviews
    Are you frustrated with telecom and UCaaS providers that fail to listen, offer generic solutions, and leave you feeling overwhelmed? We simplify the complexities of UCaaS by breaking down the advantages and disadvantages, enabling you to select the perfect tools for calls, meetings, and messaging. Our dedicated team advocates for your needs behind the scenes, ensuring you receive precisely what you desire. Enjoy the empowerment that comes with streamlined management of your communication technology, even as you support thousands of users. We take care of the setup and are always available for assistance when required. You deserve to confidently choose, implement, and support your UC technology, and our fully managed unified communications services are designed to do just that! We collaborate with you to create your ideal collaboration solution, assist with cloud migration, and provide ongoing support. With our unified communications software, user provisioning becomes a breeze. You can easily integrate and manage UC tools and platforms such as Cisco and Microsoft Teams all from a single dashboard, allowing you to onboard or offboard users in just a few clicks without any hassle. Plus, our commitment to your satisfaction means that we are always looking for ways to enhance your experience and ensure your success.
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    NetFortris Comm-unity Reviews

    NetFortris Comm-unity

    NetFortris

    $19.99/month/user
    Unify Your Communications! All your communications are in one place! You can chat, text, fax and conference as well as call, chat, text, conference, collaborate, and more. NetFortris Community unifies all communication -- voice, video and messaging, collaboration, conferencing and meetings, as well as call center -- in one platform that is easy to use. We also put it in the Cloud so your team can collaborate on any device, from anywhere, whether they are at work, home, or on the move. NetFortris Community is built to meet your business communication needs today and tomorrow. Comm-unity is easy to scale as your business grows. It always works when you need and gives your team the most recent functionality. Having all communication channels in one place will streamline teamwork and increase productivity. Comm-unity is available to your team from any internet-enabled device. You can work at home or on the move. Comm-unity grows with your business, whether you add hundreds or one user.
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    8x8 Work Reviews
    8x8 Work delivers a comprehensive communications suite that unifies calling, messaging, meetings, and AI-powered productivity features into one platform. Teams can benefit from enterprise-grade PBX capabilities, advanced call handling, SMS, and global coverage powered by machine learning to maintain crystal-clear connections. The platform goes beyond simple calling by offering video conferencing with built-in collaboration tools like polls, whiteboards, and automated meeting transcripts. Messaging, team chat, and file sharing keep workflows moving asynchronously, ensuring alignment even across distributed workforces. Its AI-powered capabilities capture insights from calls, chats, and meetings, making information accessible without adding manual overhead. Additionally, the platform offers seamless integration with leading applications such as Microsoft Teams, Salesforce, and Zendesk to unify work across multiple tools. Security and compliance are central, with certifications including HIPAA, PCI DSS, SOC 2, and GDPR adherence. For organizations seeking a scalable, reliable, and secure solution, 8x8 empowers them to modernize communication while driving collaboration and customer engagement.
  • 19
    Evolve IP Reviews
    Unlock the full capabilities of your workforce by leveraging top-tier collaboration tools from Microsoft and Cisco, seamlessly integrated with Evolve IP’s award-winning enterprise voice and communication services. Our customized Purpose-Built® solution is designed specifically for your organization, significantly enhancing employee productivity and fostering greater operational efficiency. With Evolve IP Desktop Services, including DaaS, RMM, ITaaS, and more, your team can work remotely while IT teams effortlessly manage, secure, and update devices and applications for all employees. Elevate your customer service experience with Evolve IP's renowned omnichannel contact center solution, which has been recognized in Gartner’s CCaaS Magic Quadrant for three consecutive years, boasting the highest client recommendation score among all evaluated vendors. This tailored communications and contact center platform will be uniquely crafted to meet the specific needs of your business, ensuring a seamless and effective communication experience. By choosing Evolve IP, you're not just investing in technology; you're enhancing the overall performance and satisfaction of your entire organization.
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