The Best 3CX Alternative for Windows
Looking for a 3CX replacement? SipLine offers a lightweight, secure SIP softphone with no PBX lock-in, transparent pricing, and a powerful Plugin SDK.
Why Switch from 3CX?
No PBX Lock-In
SipLine works with any SIP-compliant PBX or VoIP provider. No proprietary server required — use FreePBX, Asterisk, or any hosted PBX.
Transparent Pricing
Simple per-seat licensing with no hidden fees. No surprise price increases or forced migrations.
Lightweight & Fast
SipLine uses minimal system resources. No Electron, no web engine — just a fast native Windows application.
Extensible with Plugins
Build custom integrations with the C# Plugin SDK. CRM connectors, call analytics, custom workflows — without waiting for vendor updates.
SipLine vs 3CX — Feature Comparison
| Feature | SipLine | 3CX |
|---|---|---|
| Works with any SIP PBX | Yes | 3CX server only |
| Native Windows app | Yes | Electron-based |
| Plugin SDK | C# SDK | No |
| TLS/SRTP encryption | Yes | Yes |
| Multi-account | Up to 6 accounts | 1 extension |
| MSI/GPO deployment | Yes | Yes |
| Free tier | Community (unlimited) | Limited (10 users) |
| Pricing model | Per-seat, transparent | Per-system, tiered |
Easy Migration from 3CX
Switching to SipLine takes minutes, not days. Simply configure your SIP credentials and you're ready to go. No server migration needed.
Download and install SipLine (30 seconds)
Enter your SIP server, username and password
Start making calls — it's that simple
Ready to Leave 3CX Behind?
Try SipLine Community for free. No credit card, no commitment.