SipLine is a modern, lightweight SIP softphone for Windows 10/11 built with .NET 9 WPF. It provides enterprise-grade VoIP communication with a focus on performance, security, and extensibility.

Features

Ultra-Fast: Startup in <0.5s, minimal CPU usage
HD Audio: Opus and G.711 codecs with adaptive jitter buffer
Security: TLS transport, SDES-SRTP encryption, Windows DPAPI credential protection Multi-Account: Up to 5 simultaneous SIP accounts
Plugin SDK: C# SDK for custom integrations (CRM, call recording, automation)
Plugin Marketplace: Community and premium extensions
Headset Support: Jabra, Poly, Sennheiser, Logitech with HID controls
Call Quality: Real-time MOS Score, Jitter, Packet Loss and RTT monitoring
Enterprise: Silent MSI installer, GPO support, JSON centralized config
Compatibility: 3CX, Asterisk, FreePBX, OVH, Twilio, RingCentral, and more

Language packages : https://sipline.feelautom.fr/languages

Features

  • Ultra-Fast: Startup in <0.5s, minimal CPU usage
  • HD Audio: Opus and G.711 codecs with adaptive jitter buffer
  • Security: TLS transport, SDES-SRTP encryption, Windows DPAPI credential protection
  • Multi-Account: Up to 5 simultaneous SIP accounts
  • Plugin SDK: C# SDK for custom integrations (CRM, call recording, automation)
  • Plugin Marketplace: Community and premium extensions
  • Headset Support: Jabra, Poly, Sennheiser, Logitech with HID controls
  • Call Quality: Real-time MOS Score, Jitter, Packet Loss and RTT monitoring
  • Enterprise: Silent MSI installer, GPO support, JSON centralized config
  • Compatibility: 3CX, Asterisk, FreePBX, OVH, Twilio, RingCentral, and more

Project Samples

Main Dialer - Dark theme with DND mode and DTMF keypad Contacts Manager - Search and manage your SIP contacts SMS Messaging Plugin - Send SMS via OVH API integration Call Recordings - Browse, play, download and share recordings Settings & Plugin Manager - Configure SIP accounts, audio, codecs and manage plugins

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