Best Softphone Applications for Microsoft 365
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Compare the Top Softphone Applications that integrate with Microsoft 365 as of July 2026
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This a list of Softphone applications that integrate with Microsoft 365. Use the filters on the left to add additional filters for products that have integrations with Microsoft 365. View the products that work with Microsoft 365 in the table below.
What are Softphone Applications for Microsoft 365?
Softphone applications are software-based phones that allow users to make voice calls over the internet instead of using traditional phone lines. They run on devices like computers, smartphones, or tablets, leveraging VoIP (Voice over Internet Protocol) technology to transmit audio. Softphones offer a range of features, including call forwarding, voicemail, and conferencing, typically integrated with business communication platforms. These apps require only an internet connection and can significantly reduce costs associated with traditional telephony. With the ability to connect globally, softphones are ideal for remote teams, providing flexibility and scalability for businesses. Compare and read user reviews of the best Softphone applications for Microsoft 365 currently available using the table below. This list is updated regularly.
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Yeastar P-Series PBX System
Yeastar
Empower your workforce with Yeastar Linkus, the ultimate softphone designed to turn your mobile, desktop, or web browser into a powerful office extension. Whether you’re at home, in the field, or on the go, Linkus ensures you never miss a beat. -
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3CX
3CX
3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry 3CX can accommodate every need; from mobility and status to advanced contact center features and more, at a fraction of the cost. Ideal for companies working remotely, 3CX includes mobile apps, video conferencing and website live chat. Installation, management and maintenance of the PBX is so easy that you can effortlessly manage it yourself, whether on an appliance or server at your premise on Windows, Linux or in the cloud. Alternatively you can choose to have it hosted by 3CX for a completely hassle-free solution.Starting Price: Free for up to 10 users -
3
Adversus
Adversus
Adversus includes a built-in cloud softphone that lets outbound sales reps make and receive calls directly from their browser, with no hardware or desk phone required. Designed for high-volume outbound calling with fast call handling, automatic lead loading, and structured post-call workflows. Reps stay focused on conversations, not admin. Works with CRM integrations to log calls and sync data automatically. Reliable infrastructure with 99.97%+ uptime. GDPR compliant and ISO certified. Ideal for remote and office-based outbound teams.Starting Price: €100 pr. license -
4
Thirdlane
Thirdlane
Thirdlane is a scalable UCaaS platform that blends multi-tenant PBX, Contact Center, and collaboration apps into one solution. MSPs, Enterprises, and telecom providers adopt Thirdlane when they want freedom of deployment, deep integrations, and reliable control over their communications stack. Whether your team prefers cloud-hosted services or on-premises deployments, Thirdlane adapts to your strategy. IT departments appreciate the API-first design, while business leaders value the ability to cut costs and avoid lock-in. Core benefits: - Enterprise-grade PBX with calling, video meetings, voicemail, and advanced routing. - Unified Thirdlane Connect apps for chat, video meetings, and file sharing. - Built-in Contact Center - Advanced analytics to improve service and sales. - CRM integration for context-rich customer interactions. - White-label branding across all user touchpoints. - Options for geo-redundancy and high availability.
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