The 3CX vs FreePBX debate usually starts with one word: free. FreePBX has one of the best marketing advantages in telecom, because “free” is right there in the name.

And it is free. The same way a puppy is free.

The software costs nothing to download. Then somebody has to install it, harden it, provision the phones, buy the modules that make it act like a modern business phone system, patch it every time a new exploit shows up, and answer the call at 2 a.m. when the auto attendant stops picking up.

That somebody is usually a very tired IT person who did not sign up for any of this.

3CX takes the opposite approach: a commercial license, with most of what a business needs in the box. So the real question isn’t “free vs paid.” It’s “who’s doing the work, and what does it actually cost to own?”

This breakdown covers features, true cost, security, support, and a wrinkle most comparisons miss: the company behind FreePBX is being sold.

What Is FreePBX?

FreePBX is an open-source, web-based management interface for Asterisk, the open-source telephony engine behind decades of do-it-yourself phone systems. Asterisk handles the calls.

FreePBX gives administrators a graphical way to configure it instead of hand-editing configuration files like it’s a hobby.

• Who makes it: Sangoma Technologies, a Canadian company that owns both FreePBX and Asterisk after acquiring their original developers, Schmooze Com and Digium
• License: the core is GNU GPL, free to download, use and modify
• Platform: FreePBX 17, the current release, runs on Debian Linux
• Paid add-ons: commercial modules for features many businesses consider basic
• Commercial siblings: PBXact (a supported PBX built on FreePBX) and Sangoma Cloud UC (its hosted platform)

FreePBX is genuinely powerful, and a huge community of integrators and hobbyists knows it inside and out.

The catch is that “powerful” and “finished” are not the same word.

What Is 3CX?

3CX is a commercial, software-based phone system that runs on Windows or Debian Linux, on a business’s own hardware, in a private cloud instance, or hosted by a 3CX partner.

It’s a proprietary platform with its own SIP engine, not a front end bolted onto Asterisk.

The selling point is completeness.

A standard deployment includes desktop, web and mobile apps, video conferencing, queues, call recording, live chat, CRM integrations, phone provisioning, and a growing set of AI features.

The V20 Update 10 release added a native MCP server, a standalone AI Server for local transcription, and a new AI Customer Service Agent.

Techmode’s guide on what 3CX is and how it differs from other VoIP solutions covers the platform end to end.

The catch here is different: 3CX isn’t free.

Licensing is a recurring cost, and the edition determines the features. The 3CX pricing breakdown walks through each one.

FreePBX vs 3CX at a Glance

Category	FreePBX	3CX
Software cost	Free (open source)	Paid license by edition
Built on	Asterisk, with a PHP web interface	Proprietary 3CX engine
Mobile and desktop apps	Paid or third-party add-ons	Included
Call center queues	Basic free; advanced in paid modules	Included by edition
Phone provisioning	Paid Endpoint Manager module	Included, with firmware management
Video conferencing	Not native	Included
AI agents and transcription	Third-party integrations	Native
AI search of calls (MCP)	Not native	Native MCP server for ChatGPT, Claude, Gemini
Hosting	Self-hosted or third-party	Self-hosted, 3CX-hosted or partner-hosted
Support	Community forums or paid Sangoma support	3CX partner network
Customization	Nearly unlimited	Extensive, within the platform

Neither column is “wrong.” They’re built for different kinds of businesses.

Features: Free Core, Paid Everything Else

Out of the box, FreePBX handles the fundamentals well: extensions, ring groups, IVRs, voicemail, time conditions, basic queues and SIP trunking.

For a small office that just needs phones to ring, the free core can do the job.

Then the business asks for something modern, and the shopping cart opens.

Sangoma’s own store sells commercial modules for features most buyers assume come standard:

• EndPoint Manager: desk phone provisioning and management
• Queues Pro and Queue Reports: advanced call center routing and reporting
• Call Recording Reports and Call Accounting: visibility into the system
• Fax Pro and Xact Dialer: fax-to-email and outbound dialing

None of them are budget-breakers alone. Stack enough across a multi-site deployment, and “free” starts looking like a line item.

3CX goes the other direction: apps, video, queues and reporting are gated by edition, not sold à la carte.

Less to assemble, less to forget to renew.

Phone Management

On FreePBX, full phone provisioning lives in Endpoint Manager, a paid module (and, as covered below, the module attackers went after).

On 3CX, it’s part of the system. Update 10 added a Phones page for moving, reprovisioning and rebooting phones, plus the ability to upload vendor firmware from manufacturers like Yealink and Fanvil, assign it to individual phones or groups, and schedule updates.

Custom templates can be swapped without rebuilding a phone’s extension or BLF keys. No module to buy, no license to renew.

Calling and Remote Work

Hybrid teams expect a softphone on every laptop and a business line on every cell phone.

3CX ships native iOS, Android, desktop and browser apps, and Update 10 added a pop-out dialer, outbound number selection, quick audio conferences, Microsoft 365 and Google sign-in, and per-user recording prevention for sensitive extensions.

FreePBX can support remote users, but it usually means picking a third-party softphone, configuring it per user, sorting out NAT and firewall rules, and hoping push notifications behave.

AI Features

This is where the two platforms are furthest apart. 3CX builds AI directly into the platform:

• AI Receptionist and AI Personal Assistant: answer, screen and route calls without a menu tree
• AI Customer Service Agent: answers common questions from the business’s own knowledge sources and hands complex requests to a human
• AI transcription and summaries: transcripts plus a recap with notes and action items
• Native MCP server: lets ChatGPT, Claude and Gemini connect with permissions tied to each user’s 3CX role, so managers can ask “which calls this week mentioned a cancellation?” instead of pulling reports

Transcription can run through OpenAI, Grok or Google, or stay completely private.

3CX’s standalone AI Server processes transcription on the business’s own Apple Silicon Mac, and Techmode also runs its own SOC 2 compliant and HIPAA compliant private transcription server for clients who want privacy without managing hardware.

FreePBX can reach some of these outcomes through third-party integrations and custom dialplan work.

It’s possible. It’s also a project, with one more moving part to maintain.

Techmode’s AI phone system page shows how these features work on a fully managed 3CX deployment.

The Real Cost: Licensing vs Labor

Comparing a $0 software price to a paid license is the most common mistake in any 3CX vs FreePBX evaluation.

Software is the smallest piece of total cost. A FreePBX deployment still needs:

• Hardware or cloud compute: a server, appliance or virtual machine
• Commercial modules: whatever the business needs beyond the free core
• Setup and administration: installation, hardening, call flows, updates, backups
• Security and support: firewalls, monitoring, and someone who knows Asterisk

Self-hosted 3CX carries most of those same costs, which Techmode broke down in the complete cost breakdown of self-hosting 3CX.

The real difference shows up with a fully hosted, managed system: no servers, no patching, no admin time, just one predictable monthly cost.

FreePBX can be hosted too, but there’s no unified partner program behind it. 3CX’s hosted partner model was built for exactly this.

So which costs less? For a shop with an Asterisk expert on staff and modest needs, FreePBX can be very cheap. For everyone else, the cheapest phone system is the one nobody inside the business has to babysit.

Security: Who’s Watching the Server?

A compromised PBX can rack up expensive international calls on someone else’s dime (toll fraud), and it often sits on the edge of the network with a web interface exposed. Attackers know this.

FreePBX has had a rough stretch. Attackers exploited a zero-day flaw in the commercial Endpoint Manager module, rated the maximum CVSS severity of 10.0, to break into internet-exposed servers, and CISA added it to its Known Exploited Vulnerabilities catalog.

A second flaw in the same module followed, and the Shadowserver Foundation later counted roughly 900 FreePBX systems still running attacker web shells, around 400 in the United States.

The Hacker News covered the zero-day and Security Affairs reported the infection count.

Sangoma patched both. But a patch only protects systems that get patched, and on a self-managed FreePBX box, that’s the owner’s job.

Hundreds of compromised systems still online shows how that goes.

PHP2Shell: How FreePBX Was Impacted

Then came a bigger problem that wasn’t even in FreePBX’s code. FreePBX’s web interface is written in PHP, the language behind roughly 70% of websites.

In October, the PHP project rushed out emergency patches for two flaws nicknamed “PHP2Shell,” each rated 9.2 on the CVSS v4 scale.

Both let an attacker take over a server without logging in, even if the application on top has no bugs of its own.

The fallout was ugly. Amazon traced exploitation attempts to days before the patches were public, the Wikimedia Foundation and the Internet Archive briefly shut down services, and the NSA recommended taking sites offline if they couldn’t update right away.

The Hacker News has the technical breakdown.

For FreePBX owners, the version number decides how bad the week gets:

• FreePBX 17 runs on PHP 8.2, which has a fix. Patch it (assuming someone actually does).
• FreePBX 16 and older run on PHP branches the PHP project no longer officially supports. Source fixes exist for PHP 7.4 through 8.1, but PHP 7.3 and older will never get one.
• There’s no direct upgrade from FreePBX 16 to 17, so reaching a supported PHP version means a rebuild.

Sangoma flagged it as “action required” for FreePBX and PBXact, and users on its forum debated retiring version 16 altogether.

As of this writing, no confirmed FreePBX break-ins through PHP2Shell have been reported.

But plenty of PBXs still run years-old PHP with the admin page open to the internet, which is exactly what attackers scan for.

PHP’s Track Record

PHP2Shell wasn’t a one-off. The underlying bugs were spotted in an earlier audit, judged not exploitable, and left unpatched until attackers proved otherwise.

A separate PHP flaw on Windows servers was exploited by ransomware crews, prompting a CISA warning.

Because PHP runs so much of the internet, every serious PHP bug becomes a mass-scanning event, and every PHP emergency becomes the PBX owner’s emergency.

3CX isn’t built on PHP, so PHP2Shell wasn’t a 3CX fire drill.

To be fair, 3CX has a security history too. Its desktop app was hit by a well-publicized supply chain attack, and the company has since overhauled its build and update processes, as covered in Is 3CX Safe?. The lesson from both platforms: who handles patching, access control and monitoring matters more than the logo on the box.

Support: Forums vs a Phone Number

When FreePBX breaks, the first stop is usually the community forum.

It’s large, knowledgeable and generous. It’s also a forum, and “has anyone else seen this?” is not a service level agreement.

Sangoma sells commercial support, and independent integrators vary widely in quality. 3CX support flows through a tiered partner network, so partner selection matters as much as platform selection.

The Sangoma Sale: A Question Mark Over FreePBX

Sangoma has agreed to be acquired by BRC Group Holdings, the holding company formerly known as B. Riley Financial, at an enterprise value of roughly $204 million.

Sangoma’s announcement lays out the terms. The deal still needs shareholder, court and regulatory approval, and it says nothing about the future of FreePBX or Asterisk.

The open-source code stays open source no matter who owns Sangoma.

But the people writing that code, maintaining commercial modules and shipping security patches are mostly Sangoma employees.

Businesses planning a multi-year investment should ask whether development pace, module pricing and patch timing will hold under a financial holding company. Nobody outside BRC knows yet.

But anyone who has spent five minutes around finance knows how this works.

Holding companies and investment firms don’t buy businesses to give software away. BRC agreed to pay roughly a 47% premium over Sangoma’s share price, and its investors will expect a return on that money.

Free, open-source software doesn’t produce one on its own. The obvious levers are the parts that do make money: commercial module pricing, support contracts, and steering FreePBX users toward paid products like PBXact and Sangoma Cloud UC.

None of that has been announced, and none of it is sinister.

It’s simply how acquisitions are built to pay off. The catch is that FreePBX users are the ones holding the free part.

When FreePBX Makes Sense

FreePBX isn’t a bad choice. It’s a specific one. It fits when:

• The business has in-house Linux and Asterisk expertise
• Deep customization matters more than a polished out-of-box experience
• Budget is extremely tight and the team accepts the labor tradeoff
• The deployment is a lab, hobby project or single small office

When 3CX Is the Better FreePBX Alternative

For businesses weighing FreePBX alternatives, 3CX fits best when:

• Mobile, desktop, web and video need to work on day one
• AI agents, transcription and plain-English call search are on the roadmap
• Nobody on staff wants to become the phone system administrator
• Multiple locations and remote workers need to look like one company
• A fully hosted, fully managed system with one monthly cost is the goal

Techmode’s comparison of 3CX hosting options breaks down on-premises, self-hosted, 3CX-hosted and partner-hosted setups side by side.

How Techmode Handles 3CX (So Nobody Has to Babysit a PBX)

Everything above points to one conclusion: the platform matters, but the people running it matter more.

Techmode is a Titanium 3CX partner and a CLEC that serves as carrier of record, so it owns the platform, the lines and the outcome.

Businesses can run TechmodeGO fully hosted, or keep 3CX on-premises with Techmode installing and supporting it on their own hardware.

Either way, nobody inside the business is reading Linux logs at midnight.

Hosted TechmodeGO runs on private, per-client AWS instances, not a shared, multitenant platform where one customer’s bad day becomes everyone’s problem.

Each deployment has triple redundancy in AWS, nightly snapshots and backups to Google Cloud, backed by a 99.999% uptime SLA. Patching and security hardening are Techmode’s job, which is exactly the job that left hundreds of FreePBX servers compromised.

Moving off FreePBX starts with Premier Launch, Techmode’s white-glove installation. A dedicated project manager and install team map existing extensions, IVRs, ring groups and queues, handle number porting, and test call flows before go-live.

After the sale, Techmode’s U.S.-based Concierge team is available 24/7, with no offshore tier.

Concierge Service covers upgrades, consulting and changes, backed by a lifetime configuration guarantee.

That’s why Techmode holds an NPS of 85.7 across more than 1,000 post-support customer surveys, against an industry benchmark of about 31, along with 20+ years in business communications and an A+ BBB rating.

Thinking about leaving FreePBX behind, or just tired of being the phone guy? Talk to Techmode about a migration plan that keeps the features and drops the babysitting.

Frequently Asked Questions

Q: Is FreePBX really free?

A: The FreePBX core software is free and open source, so there’s no license fee to download and run it. Many business features, like advanced queues, phone provisioning and reporting, come from paid commercial modules sold by Sangoma. Hardware, hosting, setup, security and support labor add real costs on top.

Q: Is 3CX better than FreePBX?

A: It depends on who will run the system. FreePBX is better for teams with Asterisk expertise who want unlimited customization and don’t mind maintaining it. 3CX is better for businesses that want mobile apps, video, queues, phone management and AI features built in, with the option of a fully hosted and managed deployment.

Q: Was FreePBX affected by PHP2Shell?

A: Yes. FreePBX’s web interface runs on PHP, so FreePBX servers were exposed to the PHP2Shell flaws, and Sangoma flagged the issue as action required. FreePBX 17 runs on a PHP version with a fix, but FreePBX 16 and older run on older PHP branches with limited or no fixes, and there’s no direct upgrade path to 17.

Q: What happens to FreePBX after Sangoma is acquired?

A: Nobody knows yet. Sangoma has agreed to be acquired by BRC Group Holdings, and the announcement doesn’t describe plans for FreePBX or Asterisk. The open-source code will remain available, but development pace, commercial module pricing and patch timing could change under new ownership.

Q: How hard is it to migrate from FreePBX to 3CX?

A: Most FreePBX configurations, including extensions, ring groups, IVRs, queues and time conditions, map cleanly to 3CX equivalents, and existing phone numbers can be ported. Many supported desk phones can be reprovisioned rather than replaced. A managed migration with a dedicated project manager and pre-go-live call flow testing keeps the cutover close to invisible for employees.