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Top Rated Cloud PBX Software with One time license

Last updated: September 2026

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3 software options

Axon Virtual PBX logo

Manage phone calls for your business or call center

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Axon is a virtual IP PBX for Windows designed to manage phone calls in a business or call center environment.

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Zadarma logo

Business phone system for companies of all sizes

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Zadarma offers a new generation of business phone system with virtual numbers from 110 countries, free Cloud PBX, free CRM and widgets.

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ICTPBX logo

Self-hosted multi-tenant PBX for VoIP providers

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Cloud PBX software you host yourself. ICTPBX runs on FreeSWITCH and gives each tenant its own isolated PBX with extensions, IVR, queues, voicemail, a browser softphone and fax over IP. White-label per tenant, any SIP carrier, no per-user fees. Free open source edition on GitHub.

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