SIP Servers for Windows

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Browse free open source SIP Servers and projects for Windows below. Use the toggles on the left to filter open source SIP Servers by OS, license, language, programming language, and project status.

  • PRTG Catches Network Issues Before They Cause Downtime Icon
    PRTG Catches Network Issues Before They Cause Downtime

    Threshold-based alerts flag problems early, so your team can act before users notice, not after.

    Reactive troubleshooting usually means hearing about a problem from frustrated users, not your monitoring tool. PRTG sets threshold-based alerts across devices, servers and applications, notifying your team by email, SMS or push the moment a metric crosses a set limit. That means catching a failing disk or overloaded server before it becomes an outage and getting time back from firefighting. Start a free trial and set your first alerts today.
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  • Go from Code to Production URL in Seconds Icon
    Go from Code to Production URL in Seconds

    Cloud Run deploys apps in any language instantly. Scales to zero. Pay only when code runs.

    Skip the Kubernetes configs. Cloud Run handles HTTPS, scaling, and infrastructure automatically. Two million requests free per month.
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  • 1
    SipLine

    SipLine

    Free, native Windows SIP softphone with HD audio, SRTP encryption

    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
    Downloads: 8 This Week
    Last Update:
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  • 2
    This is a simple Sip server with UI. GPL Licensed. Available for Windows OS for the time being. Tested with Windows XP,2003,2008,Windows 7,Vista. Support presence,registar,proxy (stateful/stateless),border controller,lawful interception,early media
    Downloads: 4 This Week
    Last Update:
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  • 3
    KAMAILIO (OpenSER) - robust, secure and scalable Open Source (GPL) SIP (RFC3261) server implementation with large features set (over 90 extension modules). As of May 2009, source code is hosted by GIT repository at http://sip-router.org
    Downloads: 1 This Week
    Last Update:
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  • 4
    CafeSip - Look what Java and SIP can do

    CafeSip - Look what Java and SIP can do

    A suite of open-source tools and frameworks for creating SIP apps

    Session Initialtion Protocol (SIP) is widely used for telephone services over the Internet. CafeSip provides a suite of open-source tools and applications for creating customized SIP services and applications using the Java.
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    Downloads: 1 This Week
    Last Update:
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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  • 5
    The G.O.N.E. is a softphone (or soft phone) running over the web, fully multi-plataform, it implements the SIP protocol, and is built to work on any SIP server, like Asterisk, and others. GONE will work on a complex sistem, but this will be showed a bit
    Downloads: 0 This Week
    Last Update:
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  • 6
    Downloads: 0 This Week
    Last Update:
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  • 7
    Web interface for administrating OpenSER SIP Server.
    Downloads: 0 This Week
    Last Update:
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  • 8
    A SIP Server for Sanity Testing
    Downloads: 0 This Week
    Last Update:
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  • 9
    bv-tapi is a SIP TAPI bridge. It supports click to dial and screen popping. It is compatible with Freeswitch and babblevoice.com, but potentially should work with any SIP server which supports RFC 4235 (not Asterisk!). Source code now hosted at github. https://github.com/tinpotnick/bv-tapi.git
    Downloads: 0 This Week
    Last Update:
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  • Veeam Data Platform v13.1 Icon
    Veeam Data Platform v13.1

    Move workloads across hypervisors and clouds with no vendor lock-in. Try VDP free today.

    Try Veeam Data Platform today. Experience the unified platform that's secure by design, portable by default, and proven to recover clean, fast, and anywhere.
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  • 10
    Command-line perl script to view PortaSIP SIP server log files in convenient form. It also may be used for other SIP log formats after small changes.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Git repo: https://github.com/asipto/siremis Web management interface for Kamailio (OpenSER) - handle subscriber profiles, access control lists, accounting, least cost routing and load balancing, monitoring charts, xmlrpc communication with SIP server
    Downloads: 0 This Week
    Last Update:
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