Best Business VoIP Providers for Slack

Find and compare the best Business VoIP providers for Slack in 2025

Use the comparison tool below to compare the top Business VoIP providers for Slack on the market. You can filter results by user reviews, pricing, features, platform, region, support options, integrations, and more.

  • 1
    RingCentral RingEX Reviews
    Top Pick

    RingCentral RingEX

    RingCentral

    $19.99/month/user
    2,912 Ratings
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    RingCentral RingEX, a powerful cloud-based telephone system, helps optimize your business communication. RingCentral RingEX provides enterprise-grade communication tools, including voice, fax and text, as well as BYOD (bring your own device) capability. This allows you to work wherever and however you choose. RingCentral RingEX's core features include auto-recording and conferencing as well as unlimited long-distance calling and local calls. RingCentral RingEX can be customized to suit your needs by configuring call management features such as call forwarding, message alerts and missed-call notifications.
  • 2
    CallTools Reviews
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    Transform your contact center operations with CallTools—an innovative cloud-based platform that unifies inbound and outbound dialing for maximum efficiency. Enhance agent productivity and foster stronger customer relationships with robust features like predictive dialing, call recording, and integrated multi-channel campaigns for email and SMS. Gain a holistic understanding of team performance through comprehensive analytics and real-time reporting tools. With flexible integrations, streamlined queue management, and customizable IVR options, CallTools simplifies workflows and delivers superior call outcomes. Optimize your connection rates using advanced data targeting and dynamic caller ID tools. Designed with an intuitive interface, CallTools empowers teams to handle even complex tasks with ease.
  • 3
    Yodel.io Reviews

    Yodel.io

    YodelTalk

    $25.00 per user per month
    3 Ratings
    The phone system for customer service departments. Yodel is a receptionist who pre-qualifies inbound voice communications. It also allows call management without switching to other tools. Our battle-tested infrastructure allows you to collaborate on calls and enjoy crystal clear voice quality. Your phone system will be up and running in just minutes. No need to transfer your business phone number. Yodel integrates seamlessly with over 1000 software tools, so you can connect your phone to your existing workflows. Yodel gives you access to over 100 countries' phone numbers so you can stay in touch with your customers wherever they may be. Yodel only works with reliable local carriers to ensure the highest quality call quality. We provide reliable service uptime and a secure phone infrastructure. Modern customer service teams must provide high quality customer support and ensure customer satisfaction. Yodel takes out the pain from phone systems and delivers what's important: voice communication.
  • 4
    NUACOM Reviews

    NUACOM

    NUACOM

    €9.99 per month
    1 Rating
    NUACOM is a Software-as-a-Service and Telecom company that provides flexible and scalable calling solutions for businesses to deliver exceptional customer service and handle successful sales calls.. Sales and customer service are important departments for any organization and having a powerful communication platform is crucial for business success. Our calling platform is focused on the user experience, call analytics and automation, so you can focus on what matters most: close more deals and delight your customers.
  • 5
    OpenPhone Reviews

    OpenPhone

    OpenPhone Technologies

    $10 per user per month
    1 Rating
    A fun and powerful business phone that is easy to use for teams, professionals, and companies. OpenPhone is the new business phone. It offers powerful calling, messaging, as well as a lightweight CRM. It is great for both individuals and teams. It allows you to share your phone number with colleagues, similar to an inbox. It is available in the browser, iOS and Android. OpenPhone allows you to add a work number to any of your devices seamlessly. You can talk and text on all your devices. Yes, you can. It doesn't stop there. We have reimagined the possibilities of a phone for professionals. You can call and message anyone anywhere in the world. Facilitate cross-border communication You can create groups to communicate with multiple people at once and keep everyone on the right page. You can have as many phone numbers as you like in one account by turning them into dedicated inboxes. Record a call, or set up autorecording to record every phone call for you.
  • 6
    Zadarma Reviews
    Top Pick
    Business Phone system that doesn't require heavy wiring or hardware. Zadarma offers VoIP and Cloud PBX, CRM, website widgets and integration with top CRM systems. Virtual phone numbers in 100 countries around the globe are available for as low as $2 per month.
  • 7
    Kixie PowerCall & SMS Reviews
    Top Pick
    Kixie: Smarter Calling & Texting for Revenue Teams Kixie is the AI-powered sales engagement platform that helps teams connect faster, close more deals, and scale effortlessly—all while keeping it personal. 🔥 Outbound Sales: Boost connection rates up to 400% with AI-powered Local Presence, Multi-Line PowerDialer, and Spam Risk Prevention. 🚀 Marketing: Automate calls & texts for instant follow-ups and high-converting outreach—without the manual work. 📞 Inbound Sales & CS: Handle more calls with smart CRM-based routing, shared SMS inboxes, and instant auto-replies. 📊 RevOps & Leadership: Get AI-driven insights, real-time coaching tools, and advanced analytics to level up your team. 💥 Supercharge your sales team today! Visit our website to get started for free, no credit card required.
  • 8
    net2phone Reviews

    net2phone

    net2phone

    $17.99/month/user
    3 Ratings
    net2phone is a leading Unified Communications provider offering innovative and affordable cloud based telephony services in the US and worldwide. With an embedded Voice over IP experience at the core, 30+ years of on-going innovation, and an ever expanding global presence, net2phone is one of the fastest growing providers in the industry. Our cloud-based, unified communications and contact center solutions help businesses around the globe succeed by interacting with their consumers with enhanced intelligence and insights.
  • 9
    CallHippo Reviews

    CallHippo

    CallHippo

    $18.00/month/user
    3 Ratings
    CallHippo is a modern Contact Center Tool that allows you to connect with customers. CallHippo is simple to use and offers robust functionality with extensive reporting and seamless integrations that enable sales and service teams have productive conversations with customers. CallHippo is trusted worldwide by more than 5000 companies.
  • 10
    Aircall Reviews
    Aircall is the cloud-based phone service of choice for 3+ users modern brands. We integrate seamlessly with the most popular CRMs and Helpdesk tools to help sales and support teams communicate clearly. Administrators can instantly add numbers to 100+ countries, scale their team according to seasonality, gain deep insights through real-time analytics, and get detailed insights. Aircall is trusted worldwide by more than 3000 companies via desktop and mobile apps. Start a risk-free trial today!
  • 11
    Zoom Phone Reviews
    Top Pick

    Zoom Phone

    Zoom Communications

    $14.99 per user per month
    22 Ratings
    The cloud phone solution is natively designed for the Zoom platform. Modern user interface and enterprise-class features to simplify voice communications. Zoom administrator portal allows you to manage and provision users, as well as monitor call quality and usage. Globally distributed Zoom cloud platform provides secure HD Voice with enterprise-class reliability. You can easily make and receive calls, share content and participate in video meetings. You can also send chat messages using Zoom desktop or mobile apps. You can easily elevate phone calls to Zoom Meetings without having to ask participants to hang up or dial in to a separate conference bridge. Native apps for Windows, MacOS and Android are easy to use and maximize voice and video quality. There is an ever-growing number of countries that provide local phone numbers. Customers who want to simplify global telephony carrier management can port numbers to Zoom.
  • 12
    Yay Reviews

    Yay

    Yay.com

    $6.99 per user per month
    Built for both large organisations and growing businesses, the Yay.com business phone system offers a versatile and dynamic communication solution that both reduces costs and increases business flexibility. With softphone apps that work with the devices you already use, remote and hybrid working is seamless. Collaborate and connect from any location around the world and work the way you want to. Yay provides a platform for distributed workforces in the office, at home or on the go. Benefit from a host of business features including CRM integrations, IVR call menus, call queueing and more. Get started with a free trial and see how we can help your business thrive today.
  • 13
    Dialpad Ai Voice Reviews

    Dialpad Ai Voice

    Dialpad

    $15.00 per user per month
    A business phone system that works as it should. Your business phone system should not be a barrier to work. You can now empower remote workers with one place for business conversations regardless of where they are located. Your business phone system can now go wherever you go with mobile apps that feel like you're working from HQ. With native Ai insights, you can understand why and what was said to your business by looking at the caller information. A web portal allows you to add users, swap numbers, or create ring groups. It also allows you to make changes in real time. You can keep your numbers tied to your business, even if you switch voice providers, local, toll-free or international. Native integrations for G Suite and Zendesk give context to your conversations. Do you need to send a quick message to a prospect? You can choose from MMS, SMS, or group chat. Voice Intelligence allows you to focus on your conversation and not take notes.
  • 14
    Toky Reviews

    Toky

    Toky Inc.

    $20.00/month/user
    Toky is a fully-featured Business Phone System that allows customers and employees to communicate easily. All you need is an internet connection. Virtual phone numbers allow you to be available from anywhere in the world. Integrate your CRM with your business tools seamlessly so you can call customers with one click and automatically log all details. With proven reliability and affordable rates, you can take advantage of features like call recordings, voicemails SMS, Speech to Text, and voicemails.
  • 15
    My Country Mobile Reviews

    My Country Mobile

    My Country Mobile

    $9.99/user/month
    My Country Mobile offers low-cost, easy-to use VoIP solutions that are excellent. Enjoy the following features with a 30-day, risk-free trial of our premium VoIP phone system. Our mission is to enable families and friends to stay connected across borders by leveraging technology and intelligence. We aim to empower personal and professional connections with ease and efficiency. Our team has a wealth knowledge and expertise that allows us to deliver high quality results and exceed clients' expectations. We look forward to expanding our portfolio and growing. My Country Mobile, with its tens of year's experience in developing technologies and solutions that facilitate communication and sharing for businesses and individuals worldwide, has been a leader in the development of these technologies and services.
  • 16
    KrispCall Reviews

    KrispCall

    KrispCall

    $15 per user per month
    KrispCall allows you to manage all your telephony needs, whether they are personal, business, or corporate, using one app (Web, Android and iOS). You can access international numbers from the comfort of your own home. KrispCall makes it easy to create international numbers for national, local, shortcode and toll-free numbers (for more than 100 countries) in no matter how fast you want. You can easily manage your call logs. KrispCall's unified phonebox allows you to manage and monitor all your business calls, voicemails, and recorded conversations from one place. Call your international clients through their local numbers to earn their trust. KrispCall offers international numbers for your business at an affordable price. Our embeddable widget makes it easy to reach your customers. Clients can now easily call you by clicking on the KrispCall widget embedded in their website.
  • 17
    Voxloud Reviews

    Voxloud

    Voxloud

    $31 per month
    Voxloud, the first cloud-based telephone system in Italy, integrates AI to increase productivity and to save you time. Bring your existing landline number with you to Voxloud. Your customers will be familiar with it. You won't pay a cent. You can activate your new landline and phone system within 59 seconds. This will allow you to communicate professionally right away. Voxloud’s cloud-based phone system allows you to ditch your old phone system and work smarter. All your communications can be handled by one telephone system. Designed specifically for small and medium sized businesses. Interactive voice response systems (IVRs) with one or more levels can help you connect incoming calls faster to the correct person. Our apps and VoIP phones allow you to work anywhere, at any time, on your laptop, smartphone, tablet or tablet. With just a few mouse clicks, you can add users to your phone system in any location. Add context to phone conversations using the most popular CRM integrations available.
  • 18
    Vonage Communications APIs (Nexmo) Reviews
    Conversations are the best way to create customer journeys. Engaging experiences that move customers. Developers love it. Built for business. Vonage Communications APIs (formerly Nexmo), help growing startups and agile businesses improve their customer experience and realize new business results at scale. Our APIs, global platform and expert support make it easy to simplify communications and innovate faster. Voice interactions can be reimagined to transform customer experiences. Every message should be viewed as an opportunity for you and your customers. Secure and private logins are made easier with this tool. Cloud-based voice applications that are modern and high-quality. You can programatically send and get SMS from almost every country. Get real-time information on any phone number around the globe. You can make and receive calls using your existing VoIP infrastructure.
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