Compare the Top Softphone Applications in the UK as of March 2026

What are Softphone Applications in the UK?

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 in the UK currently available using the table below. This list is updated regularly.

  • 1
    Adversus

    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: €169
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  • 2
    VirtualPBX

    VirtualPBX

    VirtualPBX

    VirtualPBX stands as an acclaimed Business Phone System Provider, renowned for its award-winning services. Offering industry-leading features, boasting 99.999% reliability, and competitive pricing, VirtualPBX equips businesses with top-tier communication tools for seamless unified communications. Catering to a diverse range of enterprises, from entrepreneurs to contact centers seeking a complete contact center solution. VirtualPBX serves as the ultimate destination for modern business VoIP needs. With plans starting at just $18 per month, VirtualPBX ensures accessibility and excellence in communication solutions. Get a free demo today!
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    Starting Price: $18/month
  • 3
    Thirdlane

    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.
  • 4
    Zadarma

    Zadarma

    Zadarma

    Powerful Cloud Telephony for Global Businesses Zadarma offers a feature-rich VoIP platform designed for businesses that want flexibility, scalability, and professional communication without high costs. Set up your cloud PBX in minutes, manage international teams, and serve customers worldwide — all from a single interface. Key features: - Virtual phone numbers in 110+ countries - Free cloud PBX with IVR, call routing, and analytics - Integration with CRMs: HubSpot, Zoho, Bitrix24, and more - AI Voice Agent and AI-speech recognition and analytics - Apps for desktop, mobile, and browser-based calling - AI-powered voice agents and call tracking - Full control via web interface and API Ideal for remote teams, support centers, and growing companies looking to modernize their phone systems.
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    Starting Price: $2/month
  • 5
    Fonimo

    Fonimo

    Fonimo

    Augment reach, engagement, and experience with a powerful and the best VoIP Softphone in the industry. A white label VoIP Softphone empowered with the power of WebRTC, mobility, and VoIP bestows brilliant convenience and seamless connectivity. Take advantage of crystal clear voice calls and HD quality video calls for ad-hoc meetings or planned business calls and conferences. Get push notifications without consuming device performance to stay alert and battery savvy with the powerful VoIP Softphone app. Align your vision and mission with features of your WebRTC Softphone using our customizable and white label SIP Softphone.
  • 6
    maaiiconnect
    maaiiconnect makes customer engagement simple. It is the only cloud-based platform that brings digital and telecom communications together to help businesses deliver seamless customer experiences. Be a truly omnichannel business. Centralise channels such as WhatsApp, WeChat, Facebook Messenger, SMS, Virtual Numbers, Video Conferencing, and a Web Communications Widget for Live Chat and Web Calls into one place with full customer relationship history, customer data, CRM, ticketing system, and rich insights.
    Starting Price: Free
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