3CX review & overview

Self-hostable or cloud PBX licensed by simultaneous calls rather than per user, giving low cost at scale for IT-managed deployments.

3CX sits in the pbx space and is most often picked for it-teams, cost-at-scale. Below is a quick, no-fluff overview to help you decide if it fits.

Key facts

Who it's for

3CX makes most sense for it-teams.

• it-teams
• cost-at-scale

Key features

What you actually get with 3CX, drawn from independent reviews and the vendor's own documentation:

• Self-hostable or cloud PBX licensed by simultaneous calls, not per user
• Deploy on Windows or Linux, hosted by 3CX or self-hosted on AWS/Azure/GCP/DigitalOcean
• Queues, supervisor reporting and integrations on Pro edition
• Apps and softphone for desktop and mobile
• Free Edition with 4 simultaneous calls for hobbyists/micro setups

Integrations

3CX connects with Microsoft 365, Salesforce, HubSpot, Zendesk and CRM templates.

What makes it stand out

A PBX licensed by concurrent calls instead of per user, cheap at scale for IT teams.

Who it's best for

IT-managed organizations wanting low cost-at-scale and self-hosting control

Strengths & trade-offs

The honest balance for 3CX, from independent reviews rather than its sales page. We go deeper in the full 3CX review.

Strengths

• + Simultaneous-call licensing can be far cheaper at scale than per-user
• + Self-hosting option for full control
• + Reintroduced Free Edition (4 SC) for very small setups

Trade-offs

• - SMB Free edition discontinued Jan 30, 2026 (replaced by a narrower Free Edition)
• - April 2026 enforces a 5-8 extensions-per-SC ratio
• - Perpetual licensing removed; all licenses now annual subscription
• - Requires IT skills to deploy and manage

Notable facts

Concrete, checkable details rather than marketing claims:

• Licensed by number of simultaneous calls, not per user
• Original SMB Free edition discontinued January 30, 2026; new Free Edition (4 SC) launched with Update 8
• From April 1 2026, enforces a 5-8 extensions-per-simultaneous-call ratio
• Perpetual licensing discontinued for mid-market; all licenses now annual subscription

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