3CX vs Zoiper: PBX vs Softphone Compared for 2026
These two get compared like they're rivals. They're not. 3CX is a full IP PBX - call routing, IVR, video conferencing, AI transcription, the works. Zoiper is a softphone client that sits on top of a PBX. Zoiper's own website lists 3CX as a compatible backend. Putting 3CX vs Zoiper head-to-head is like comparing a car engine to a steering wheel - you probably need both.
30-Second Verdict
- Need a full business phone system? 3CX.
- Need a lightweight softphone for an existing PBX? Zoiper 5 PRO.
- Need both? Run Zoiper as your desktop/mobile client on a 3CX backend.
- Skip both if your real bottleneck isn't the dialer - it's finding numbers worth dialing.
What Each Product Actually Is
3CX
3CX is a self-hosted or cloud-hosted IP PBX: IVR menus, call routing, ring groups, call recording, video conferencing, and AI features like transcription and an AI receptionist. It's licensed by simultaneous calls, not per user, which makes it significantly cheaper than per-seat alternatives once your team grows past 15-20 people.
Zoiper
Zoiper is a cross-platform SIP softphone - Windows, Mac, Linux, Android, iOS - that connects to any standards-based SIP PBX. Its standout features are encryption depth (TLS, SRTP, and the rare ZRTP) and broad codec support including Opus and G.729. The free version limits you to one SIP account and two lines. PRO unlocks unlimited accounts, call recording, and auto-provisioning.
Feature Comparison
| Feature | 3CX | Zoiper 5 PRO |
|---|---|---|
| Call routing / IVR | Full PBX | Client only |
| Video conferencing | Built-in | No |
| Call recording | Yes | Yes |
| Encryption | TLS, SRTP | TLS, SRTP, ZRTP |
| Auto-provisioning | Yes | Yes (HTTP/HTTPS/SFTP/FTP) |
| CRM integrations | Yes (multiple) | Click-to-dial (Salesforce, Freshdesk) |
| AI transcription | Yes (ENT/AI tier) | Via Banafo AI integration |
| Capterra features | 43/50 | 21/50 |
That feature gap looks dramatic, but it's misleading. 3CX scores higher because it's an entire phone system. Zoiper isn't trying to be one. Where Zoiper wins: encryption depth and cross-PBX flexibility. If you want the best of both worlds, running Zoiper as the client on a 3CX backend is a clean setup that many teams already use.
Pricing Breakdown
3CX (Self-Hosted, Annual - 8 Simultaneous Calls / ~40 Users)
| Tier | Annual Cost |
|---|---|
| Basic | $320 |
| PRO | $350 |
| ENT/AI | $575 |
| ENT+ | $775 |
3CX offers a free SMB tier for up to 10 users. Prices went up in January 2026, so older comparisons will show lower numbers. 3CX-hosted plans (PRO to ENT+) run $645 to $1,070/year at the 8 SC tier - Basic isn't offered on hosted at that level.
Zoiper
| Version | Cost |
|---|---|
| Zoiper 5 Free | $0 (1 account, 2 lines) |
| Zoiper 5 PRO | EUR 59.95 one-time |
Zoiper's perpetual license is its biggest pricing advantage. No subscription, no renewal. But watch the gotchas: licensing is per seat and per OS, with only three device resets for hardware failures or OS changes. Mobile licenses go through app stores separately.
TCO: 20-Person Team Over 3 Years
3CX PRO self-hosted at 16 SC: $750/year x 3 = $2,250. Zoiper PRO for 20 seats: EUR 59.95 x 20 = ~EUR 1,199 once. Zoiper looks cheaper on paper, but it doesn't replace a PBX. You'd still need 3CX or Asterisk underneath it . The real question is whether 3CX's built-in softphone is good enough, or whether Zoiper's encryption and polish justify the extra spend.
Here's the thing: if your team is under 20 people and doesn't need ZRTP, 3CX's native app is fine. Save the Zoiper budget for better contact data - that's where connect rates actually move.
You can debate 3CX vs Zoiper all quarter - but if your reps are dialing outdated numbers, neither will fix your connect rate. Prospeo's mobile finder delivers 125M+ verified direct dials with a 30% pickup rate, refreshed every 7 days.
Stop optimizing the dialer. Start fixing the dial list.
What Users Say
Both tools sit at 4.4 stars on G2 (529 vs 52 reviews) and nearly identical ratings on Capterra (4.4 vs 4.3). Zoiper edges 3CX on support quality (8.5 vs 7.9 on G2) and value-for-money (4.5 vs 4.3 on Capterra).
3CX praise: Users love the admin panel and competitive multi-site pricing. The complaints center on setup complexity for non-technical admins, nested menus, and the web client freezing on spotty connections.
Zoiper praise: Users love the one-time license and call quality. The downsides: missed calls and privacy concerns come up in reviews, and the free version is too limited for real work.
When to Choose Which
Pick 3CX If...
You need a complete unified communications platform from scratch. IVR, call routing, video conferencing, AI transcription - 3CX handles the whole stack. Self-hosting keeps costs predictable through simultaneous-call licensing, and the free tier gives small teams a no-risk starting point.
Pick Zoiper If...
You already have a SIP PBX and want a better softphone client. Zoiper's cross-platform support, ZRTP encryption, and one-time pricing make it ideal for teams that refuse to be locked into their PBX vendor's native app. It pairs well with 3CX, Asterisk, or FreeSWITCH. Skip it if you don't already have a PBX - Zoiper alone won't get you a phone system.
Alternatives Worth a Look
Bria - $2.95/mo per user. Adds team messaging, video, and screen sharing on top of softphone basics. Good middle ground between Zoiper's simplicity and a full UC platform. CounterPath's site has the full breakdown.
Linphone - Free and open-source. Solid codec support but requires technical chops for setup. Best for dev teams who want total control.
MicroSIP - Windows-only, lightweight, free. The fastest path to a no-frills SIP dialer on a PC.
The Part Nobody Talks About
We've watched teams spend weeks evaluating PBX features while their connect rates sit below 5% because the contact data is garbage. Let's be honest - the best phone system in the world doesn't help if your reps are dialing dead numbers all day. We ran into this exact problem with a client last year: they'd upgraded to a shiny new 3CX setup, bought Zoiper PRO licenses for everyone, and still couldn't break a 4% connect rate. The issue wasn't the phones. It was the list.
Prospeo's mobile finder covers 125M+ verified mobile numbers with a 30% pickup rate. There's a free tier, no contracts. Plug verified numbers into Salesforce or HubSpot and reps spend time talking instead of listening to voicemail robots.
One team tripled their connect rate to 20-25% after switching to Prospeo - same phones, same reps, better numbers. At $0.01 per lead with no contracts, it costs less than a single Zoiper PRO license to test.
Plug verified numbers into your PBX and watch connect rates climb.
FAQ
Can you use Zoiper with 3CX?
Yes - Zoiper lists 3CX among the SIP-based PBXs it officially supports. Many teams run Zoiper as their softphone client on a 3CX system for better cross-platform flexibility and ZRTP encryption, which 3CX's native app doesn't offer.
Is 3CX really free?
3CX offers a free SMB tier for up to 10 users with basic PBX features. Beyond that, paid plans start at $320/year for self-hosted Basic at 8 simultaneous calls. Prices increased in January 2026, so budget accordingly.
What's the best softphone for outbound sales teams?
For call quality and encryption, Zoiper PRO on a 3CX backend is hard to beat. But the bigger lever for outbound teams is data quality - verified mobile numbers consistently move connect rates more than any softphone swap. The consensus on r/sales threads tends to agree: dial quality matters, but dialing the right person matters more.