The free SIP softphone for Windows
Download SipLine, the free and lightweight SIP softphone for Windows 10/11. Multi-account, HD audio and SRTP encryption — perfect for SMBs, freelancers and enterprises.
Why Choose SipLine?
Zero-Trust Ready
TLS transport & SDES-SRTP encryption available.
Ultra-Fast
Startup in <0.5s. Imperceptible audio latency.
Windows Platform
A codebase optimized for Windows.
SDK & Modular Ecosystem
Unleash SipLine's potential with our dedicated SDK.
Advanced Features
Real-Time Monitoring
Visualize your call quality live. MOS Score, Jitter, Packet Loss and RTT are analyzed in real time via RTCP to guarantee optimal clarity.
Limitless Extensibility
Use our complete SDK to create custom extensions.
Discover our plugins in our marketplaceMulti-Trunk Ready
Architecture designed for multi-account management. Enjoy total flexibility for your different SIP providers: manage your trunks simultaneously with complete isolation and simplified configuration.
Simple Pricing
A plan adapted to every use case, from freelancer to call center.
For students, enthusiasts, and anyone who wants a solid softphone.
For freelancers and small businesses that rely on their phone.
Full productivity for businesses.
For large-scale deployments.
Manage your fleet autonomously
Access your client area to manage your licenses, download your invoices and configure your users in one click.