3CX

Sangoma is the primary steward and commercial backing organization behind Asterisk and FreePBX, offering both the open-source FreePBX software platform and commercial PBXact systems for self-hosted and on-premises business telephony.

Bicom Systems specializes in turnkey PBX software with dedicated multi-tenant capabilities (PBXware Multi-Tenant Edition) designed specifically for enterprise and service provider multi-tenant voice deployments.

Yeastar provides the P-Series Software Edition, a robust software-based IP PBX designed for private virtual machines or bare-metal enterprise servers supporting unified communications and multi-branch management.

PortaOne delivers PortaSwitch, a carrier-grade, highly scalable Class 5 softswitch and multi-tenant unified communication software platform engineered for self-hosted telecommunication operators and enterprise providers.

Vodia Networks develops a versatile software IP PBX engineered with native multi-tenancy from the core, making it well suited for self-hosted multi-tenant setups and on-premise business phone system requirements.

Wildix offers a browser- and WebRTC-centric unified communications and IP PBX system capable of deployment in customer private clouds and on-premises virtual environments with multi-location network management.

Mitel offers MiVoice Business, an established enterprise software communication platform that can be deployed on private virtualized infrastructure or on-premises servers across multi-site environments.

Avaya provides the IP Office platform, enabling businesses to host feature-rich unified communications software on private servers, virtual machines, or appliances across distributed enterprise sites.

Sipwise develops the C5 platform, a multi-tenant softswitch and IP PBX software stack suited for service providers and large enterprises wanting self-managed or on-premises Class 5 VoIP telephony infrastructure.

RingCentral is a dominant market leader in enterprise cloud telephony with mature partner programs (RingCentral Reach and IGNITE!) that enable MSPs and telecom agents to replace complex legacy PBX systems with fully featured cloud UCaaS.

Intermedia operates one of the most MSP-centric business phone models in North America and Europe, enabling managed service providers to deliver hosted PBX systems either co-branded or under private-label models with centralized billing and control.

8x8 delivers global enterprise cloud telephony and contact center capabilities heavily supported by an international channel partner program, making it a reliable fit for replacing multi-site legacy PBX deployments across Europe and North America.

GoTo Connect offers an easy-to-deploy hosted cloud PBX with visual dial plan editors and comprehensive MSP partner tooling, making it a common choice for IT partners migrating small to mid-sized businesses away from legacy on-premises phone systems.

Zoom Phone provides modern cloud PBX capabilities natively integrated into Zoom Workplace, backed by a strong certified partner channel that assists enterprise and midmarket customers in replacing legacy PBXs.

Dialpad offers an AI-driven cloud PBX and unified communications platform with an active partner network tailored for MSPs, telecom agents, and systems integrators transitioning customers off legacy phone hardware.

Vonage Business Communications provides a scalable hosted cloud PBX platform supported by an established channel and distributor ecosystem across both the US and Europe.

Mitel has one of the largest installed bases of traditional PBX deployments globally and relies on an extensive certified telecom partner network to transition legacy PBX clients to hybrid and cloud-hosted voice environments.

Gamma is a key European voice carrier and hosted PBX provider operating primarily through a vast channel partner and MSP ecosystem to replace ISDN and legacy on-premises phone systems.

Pan-European cloud PBX specialist offering native GDPR-compliant hosted telephony and UCaaS tailored to replacing on-premise PBX hardware across DACH and Western Europe.

Leading provider of UCaaS and cloud PBX across the UK and mainland Europe (Germany, Spain, the Netherlands), specializing in enterprise on-premise PBX migration and operator connect voice services.

European unified communications group combining leading regional PBX technologies (including Swyx and Voiceworks) to deliver scalable cloud voice, contact center, and mobile convergence.

Pioneering German cloud telephony provider offering modular cloud PBX platforms with strong localized carrier integration and API-driven telephony across Europe.

Global enterprise UCaaS leader with comprehensive European regulatory compliance, local carrier peering, and dedicated transition tools for legacy on-premise PBX replacement.

European-headquartered vendor offering browser-based UCaaS and WebRTC cloud PBX solutions designed specifically for partner-led migration of legacy enterprise systems.

Fast-growing European cloud communications provider offering secure business telephony, fixed-mobile convergence, and UCaaS across Benelux, France, and the Nordics.

Global enterprise cloud PBX and contact center provider with extensive European presence, certified PSTN replacement in numerous European countries, and deep Microsoft Teams voice integration.

Legacy enterprise telecom provider facilitating phased cloud and hybrid migrations for European organizations moving off legacy on-premise PBX estates to modern UCaaS environments.