Compare the Top Business VoIP Providers that integrate with Causal as of September 2026

This a list of Business VoIP providers that integrate with Causal. Use the filters on the left to add additional filters for products that have integrations with Causal. View the products that work with Causal in the table below.

What are Business VoIP Providers for Causal?

Business VoIP providers are companies that offer Voice over Internet Protocol (VoIP) phone systems for businesses. These systems allow businesses to make and receive phone calls over the Internet, reducing monthly phone bills and providing additional features such as voicemail, automated attendants, and call forwarding. VoIP providers typically offer a variety of plans, making it easy for businesses to find a cost-effective solution that meets their needs. Compare and read user reviews of the best Business VoIP providers for Causal currently available using the table below. This list is updated regularly.

  • 1
    Aircall

    Aircall

    Aircall

    Aircall is an AI-powered customer communications and intelligence platform that unifies phone, messaging, and call center operations. Designed for sales and support teams, it enhances every interaction with features like AI Voice Agents, real-time conversation coaching, and integrated WhatsApp messaging. With powerful analytics, call recording, and shared inboxes, teams gain clarity and can resolve customer issues faster. The platform is easy to set up, offering quick number claiming, seamless integrations, and customizable workflows. Trusted by over 23,000 companies worldwide, Aircall helps businesses improve connection rates, boost CSAT scores, and streamline onboarding. By combining automation with human-first AI, Aircall reduces busywork so teams can focus on building better customer relationships.
    Starting Price: $30/user/month
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  • 2
    Ooma Office
    Ooma Office is an award-winning, easy to adopt and affordable business VoIP solution for any size business. Whether you have 2, 20, or 200 employees, Ooma provides advanced voice and collaboration features that are flexible and scalable. Ooma Office combines the ability to have unlimited lines for your business and an easy do-it-yourself setup with no contracts or long-term commitments. This makes it easy for a small business to scale its office phone system with Ooma as its business grows. Customers have their choice of hardware – conventional analog phones, IP phones, virtual service through Mobile and Desktop apps, or any combination of the three. Ooma offers a full suite of business phone features designed to deliver a flawless communications experience. Advanced features such as a virtual receptionist, ring groups, call parking and multi-site access combine to make small businesses sound big.
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    Starting Price: $19.95/month per user
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