List of the Top Business VoIP Providers for Slack in 2026

Engage and collaborate on your own terms with the all-encompassing solution provided by Intermedia Unite. Whether you're working from the office, traveling, relaxing at home, or sipping coffee, the expansive communication and collaboration tools from Intermedia Unite ensure that you can maintain productivity and stay connected with both colleagues and clients effortlessly. You can securely share and work on documents from almost any location, enjoying complete file management with features like real-time backup and recovery. Automated greetings and rapid call routing that align with your operational hours guarantee that customers are swiftly directed to the right team member, ensuring efficient access to your staff. Incoming calls can be directed to specific teams designated for handling them, while also keeping you informed about your coworkers' availability statuses through instant notifications that indicate whether they are Available or Unavailable. With Intermedia Unite, maintaining connections while enhancing productivity has never been easier or more effective, making it an essential tool for any modern workplace.

Aircall transforms conventional VoIP systems and outdated telephone infrastructure by offering a contemporary business phone solution entirely based in the cloud. This ensures dependable calling through a worldwide cloud voice network, eliminating the need for desk phones or physical servers. In addition to standard VoIP capabilities, users have access to features like Business Text Messaging (SMS & MMS), mobile apps for business calls, and a Shared Inbox, which centralizes communications and fosters teamwork rather than leaving messages spread across multiple devices. Integrated AI Assistants provide instantaneous feedback and summaries of calls, while AI Agents are available around the clock to manage common inquiries. With seamless integration with over 250 customer relationship management (CRM) systems and help desks, every interaction is enriched with shared customer insights automatically. For teams seeking more than just a basic VoIP service, Aircall is the communication platform chosen by over 24,000 organizations.

Transform your surroundings into a functional workspace with 800.com, which enables you to oversee your business operations directly from your mobile device. This service comes without the need for a contract, providing advanced calling features and cell phone forwarding capabilities that enhance customer engagement, brand recognition, and response rates through SMS messaging. You can effortlessly manage extensions, send out professional greetings, and oversee your account conveniently online. 800.com supports various types of forwarding, including simultaneous and sequential ringing, ensuring you never miss a call. Utilizing toll-free numbers establishes a credible presence in the U.S. market, while local numbers can suggest a limited business scope. Each member of 800.com enjoys full access to all phone system tools, irrespective of their selected plan, making it easier to serve clients and reduce long-distance charges for both your customers and your business. By choosing 800.com, you position your company for success in a competitive environment.

Revolutionize your contact center operations with CallTools, a cutting-edge cloud-based solution that seamlessly integrates both inbound and outbound dialing to maximize productivity. Boost agent efficiency while building stronger connections with customers through powerful features such as predictive dialing, call recording, and coordinated multi-channel campaigns via email and SMS. Obtain a comprehensive view of team performance with in-depth analytics and real-time reporting capabilities. With adaptable integrations, efficient queue management, and personalized IVR settings, CallTools streamlines processes and enhances call results. Improve your connection rates by utilizing sophisticated data targeting and dynamic caller ID technologies. Designed for simplicity, CallTools equips teams to tackle even the most challenging tasks effortlessly, ensuring a smoother workflow across the board. This innovative platform not only enhances operational efficiency but also fosters a more responsive and customer-centric approach in your contact center.

Kixie: Intelligent Calling and Texting Solutions for Revenue Teams Kixie serves as an AI-driven sales engagement platform designed to enable teams to connect more swiftly, secure additional deals, and grow seamlessly—all while maintaining a personal touch. 🔥 Outbound Sales: Elevate connection rates by as much as 400% through AI-enhanced Local Presence, Multi-Line PowerDialer, and Spam Risk Prevention. 🚀 Marketing: Streamline calls and texts for immediate follow-ups and impactful outreach—all without the hassle of manual processes. 📞 Inbound Sales & Customer Service: Manage a higher volume of calls with intelligent CRM-based routing, shared SMS inboxes, and instant auto-responses. 📊 Revenue Operations & Leadership: Access AI-generated insights, real-time coaching resources, and sophisticated analytics to enhance your team's performance. 💥 Transform your sales force today! Explore our website to begin your journey for free, with no credit card necessary, and discover the difference Kixie can make.

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.

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.

Dialpad Connect is an advanced, AI-powered customer communications platform designed to unify voice calls, video meetings, and team messaging into a single, intuitive experience that enhances productivity and customer satisfaction. Its intelligent features include real-time call transcription, automated voicemail transcription, AI-generated conversation summaries, and actionable recommendations that keep users focused and informed during every interaction. The platform integrates seamlessly with a wide array of popular business tools such as Salesforce, Zendesk, Microsoft Teams, Google Workspace, and Hubspot, enabling organizations to streamline workflows and centralize communication data. Built on a robust dual-cloud infrastructure, Dialpad Connect delivers enterprise-grade reliability with 100% uptime SLA, comprehensive disaster recovery, and 24/7 customer support. It meets strict security and privacy standards, including GDPR, HIPAA, SOC 2, ISO certifications, and LGPD compliance, ensuring sensitive data is well protected. Dialpad’s AI capabilities extend to providing live coaching to agents during calls, facilitating better sales outreach, and offering real-time analytics to boost operational efficiency. The platform caters to businesses of all sizes, from startups to global enterprises, helping them transform their communication strategies. Dialpad Connect simplifies complex communication needs into a unified platform that supports inbound and outbound contact centers, cloud phone systems, and virtual collaboration. Its flexibility and scalability allow organizations to adapt and grow while maintaining exceptional customer experiences. Ultimately, Dialpad Connect turns everyday conversations into actionable insights that drive business growth.

One Platform for All Business Calls Simplify and enhance your business communications with Zadarma. From internal calls to global customer service, everything runs in the cloud — secure, reliable, and fully customizable to your workflow. Highlights include: - Visual PBX constructor for intuitive setup - AI call agents and speech recognition tools - Automatic call distribution (ACD) and IVR setup - eSIM for global mobile connectivity - Full API access to automate and integrate with your systems - 24/7 support and detailed documentation Perfect for companies managing international communication, remote support, or multi-channel sales teams.

RingCentral RingEX is a robust cloud-based telephony solution designed to enhance your company's communication efficiency. With enterprise-level communication functionalities like voice, fax, and text, along with the flexibility of BYOD (bring your own device), it enables you to operate from virtually anywhere. The platform's essential features encompass automatic call recording, conferencing capabilities, and unlimited local and long-distance calls. Additionally, RingCentral RingEX offers personalization options, allowing you to tailor call management settings such as call forwarding, message alerts, and notifications for missed calls to fit your specific requirements. This adaptability makes it a versatile choice for a wide range of business environments.

Scattered conversations cost businesses time, money, and customers. When voice, chat, video, and support tickets live in different systems, teams lose context, customers repeat themselves, and problems take longer to solve. net2phone fixes this. For 30+ years, net2phone has built AI-powered communication technology for businesses that treat customer experience as a competitive advantage. Today more than 500,000 users rely on net2phone to turn everyday conversations into retention and growth, backed by expert guidance at every step of implementation and beyond. Unite brings voice, messaging, video, and chat together in one workspace. Calls and video are recorded and transcribed automatically, sentiment analysis flags how conversations are actually going, action items get tracked without manual entry, and AI drafts the follow-up emails, so teams stop switching tabs to get work done. AI Agent takes routine work off your team's plate entirely. It answers customer questions, resolves support cases, books appointments, and processes returns across phone and chat, in more than 30 languages, and hands off to a human the moment a conversation needs one. Coach AI reviews every single voice, video, and text interaction, not a sample, so managers can see exactly how each rep and department are performing, spot coaching opportunities, and act on real call summaries and sentiment data instead of guesswork. uContact powers high-volume sales and support operations with intelligent routing, omnichannel automation, and live dashboards, keeping customer experience consistent no matter how much volume comes in. net2phone integrates with the systems you already run, includes a no-code workflow builder, and is protected by enterprise-grade security throughout, so the technology keeps delivering measurable results long after go-live.

Yodel serves as an innovative receptionist for customer service departments, expertly handling inbound voice communications to pre-qualify calls. This system facilitates call management without the need to switch between different tools, ensuring a smooth experience. With a robust infrastructure built on proven technology, users can collaborate effectively on calls while benefiting from exceptional voice clarity. Within minutes, you can have your phone system operational without the hassle of transferring your existing business number. Yodel seamlessly integrates with more than 1000 software applications, allowing you to link your phone system to your workflows effortlessly. Additionally, it offers access to phone numbers in over 100 countries, ensuring you remain connected with your customers no matter their location. By partnering only with trustworthy local carriers, Yodel prioritizes outstanding call quality and reliability. Our service is designed to maintain high uptime and uphold a secure phone infrastructure. In today's competitive landscape, customer service teams are expected to deliver superior support and enhance customer satisfaction. Yodel eliminates the complexities associated with traditional phone systems, focusing instead on what truly matters: effective voice communication and customer engagement. Moreover, with its user-friendly interface and reliable features, Yodel empowers businesses to enhance their communication strategies and foster better relationships with their clientele.

CallHippo is an advanced contact center solution designed to facilitate connections with clients. Its user-friendly interface, combined with powerful features and comprehensive reporting, empowers sales and service teams to engage in effective conversations with customers seamlessly. Moreover, CallHippo integrates effortlessly with various platforms, enhancing overall productivity. With a global trust from over 5,000 businesses, it has established itself as a reliable choice in the market. This level of widespread adoption highlights its effectiveness and the value it brings to organizations seeking to improve customer interactions.

My Country Mobile provides affordable and user-friendly VoIP solutions that are truly exceptional. Experience a range of features with our 30-day, no-risk trial of the premium VoIP phone system. Our goal is to help families and friends maintain connections across distances by utilizing advanced technology and intelligence. We strive to enhance both personal and professional relationships with simplicity and effectiveness. With extensive knowledge and expertise, our team is dedicated to delivering top-notch results that surpass our clients' expectations. We are excited about the prospect of expanding our services and achieving further growth. With decades of experience in crafting technologies and solutions that enhance communication and sharing for businesses and individuals globally, My Country Mobile has established itself as a frontrunner in the innovation of such technologies and services. As we continue to evolve, we remain committed to fostering connectivity in an increasingly digital world.

NUACOM operates as a Telecom and Software-as-a-Service provider, offering adaptable and scalable calling solutions that empower businesses to enhance customer service and excel in sales engagements. Effective sales and customer service are vital for any organization, making a robust communication platform essential for achieving business success. Our calling platform prioritizes user experience, call analytics, and automation, allowing you to concentrate on what truly matters: increasing your sales and ensuring customer satisfaction. By leveraging our solutions, organizations can foster stronger relationships with their clients and streamline their communication strategies.

Quo is redefining business phone systems by unifying calls, texts, and contacts into one AI-powered communications hub. Designed to streamline customer interactions, it offers Sona, an always-available AI receptionist that ensures no call goes unanswered. Sona can intelligently respond to inquiries, capture caller details, and transfer conversations, giving businesses peace of mind that every customer feels valued. The platform also organizes complete conversation histories across channels, making it easy for teams to stay aligned and provide consistent support. Lightweight CRM tools let businesses manage contacts with custom fields and notes, giving teams immediate access to critical context. Quo AI elevates workflows with automated call transcripts, smart tagging, summaries, and next-step recommendations to improve response times and productivity. Collaboration is enhanced with features like shared numbers, warm transfers, group calling, and private threads for internal discussions. Managers gain oversight through advanced analytics, call filtering, and activity tracking, ensuring performance accountability across teams. The system integrates with existing business tools and APIs, offering flexibility, automation, and scalability for growing companies. Rated #1 in customer satisfaction on G2 and trusted by thousands of businesses worldwide, Quo delivers the modern phone solution that balances reliability, intelligence, and teamwork.

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.

Toky is a comprehensive Business Phone System designed to facilitate smooth communication between customers and employees alike. With just an internet connection, you can stay connected from virtually any location around the globe. The system provides virtual phone numbers, ensuring you are reachable no matter where you are. Additionally, it allows for seamless integration with your CRM and other business tools, enabling you to call customers with a single click while automatically recording all relevant details. Known for its reliability and cost-effectiveness, Toky offers a range of features, including call recordings, SMS, speech-to-text capabilities, and voicemail management, making it a versatile choice for businesses. This combination of features ensures that you can maintain effective communication and streamline your operations efficiently.

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.

Dialbird is an innovative phone solution designed for businesses that leverages AI and VoIP technology to optimize communication for modern teams. As organizations grow, their existing phone systems frequently fall short, resulting in fragmented calls across personal devices, messages siloed in various applications, and a heavy dependence on memory for follow-ups. This lack of organization can lead to delayed responses, lost opportunities, subpar customer service, and, ultimately, a decline in revenue. By integrating Dialbird into their operations, teams can significantly improve their response times, ensure cohesive communication, automate interactions, and manage follow-ups more effectively. More than 500 small to medium-sized businesses, including a variety of sales and support teams, clinics, and service providers, have chosen this system for its organized framework that exceeds the functionality of simpler phone applications while avoiding the hefty expenses and complexities linked to traditional phone systems. The platform not only streamlines communication but also nurtures a collaborative atmosphere, making it well-suited to evolve alongside the dynamic requirements of growing enterprises. Furthermore, Dialbird's user-friendly interface allows teams to focus more on their core tasks, boosting overall productivity and enhancing customer satisfaction.

Creating impactful customer journeys through engaging dialogues is essential for delivering experiences that resonate with your audience's expectations. Appreciated by developers and tailored for larger enterprises, Vonage Communications APIs (formerly Nexmo) equips emerging startups and agile companies to enhance customer interactions and achieve remarkable business outcomes on a larger scale. Our easy-to-use APIs, extensive global network, and committed support enable you to streamline communication challenges and accelerate innovation effectively. Rethink your approach to voice communication to revolutionize the way customers connect with your brand, making every interaction a crucial opportunity for growth. By advancing security and privacy protocols, we ensure seamless login experiences for your clients. Build modern, high-quality voice applications hosted in the cloud and send or receive SMS messages effortlessly across nearly every country worldwide. Gain access to real-time insights on any phone number globally, and initiate or accept calls using your existing VoIP system, all from the cloud to enhance flexibility and operational efficiency. This comprehensive strategy not only boosts user engagement but also cultivates enduring relationships with your customers, ultimately driving loyalty and success. Moreover, as industries continue to evolve, staying ahead of communication trends will be key to maintaining competitive advantage.