Free Sip Server

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This list of SIP software documents notable software applications which use Session Initiation Protocol (SIP) as a voice over IP (VoIP) protocol.


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Free and open-source license[edit]

  • Cipango SipServlets 1.1 application server
  • Issabel, fork of Elastix
  • Kamailio, formerly OpenSER[1]
  • Mobicents Platform (JSLEE[2] 1.0 compliant and SIP Servlets 1.1 compliant application server)
  • OpenSIPS, fork of OpenSER
  • SIP Express Router (SER)

Proprietary license[edit]

  • 3Com VCX IP telephony module: back-to-back user agent SIP PBX
  • 3CX Phone System, for Windows, Debian 8 GNU/Linux
  • Aastra 5000, 800, MX-ONE
  • Alcatel-Lucent 5060 IP Call server
  • Aricent SIP UA stack, B2BUA, proxy, VoLTE/RCS Client
  • Avaya Application Server 5300 (AS5300), JITC certified ASSIP VoIP
  • Bicom Systems IP PBX for telecoms
  • Brekeke SIP Server, SIP proxy, SIP registrar, SIP NAT, TCP/UDP
  • Brekeke PBX, SIP PBX for service providers and enterprises
  • Cisco SIP Proxy Server, Cisco unified border element (CUBE), Cisco Unified Communication Manager (CUCM)
  • CommuniGate Pro, virtualized PBX for IP Centrex hosting, voicemail services, self-care, ...
  • Comverse Technology softswitch, media applications, SIP registrars
  • Creacode SIP Application Server Real-time SIP call controller and IVR product for carrier-class VoIP networks
  • Dialogic Corporation Powermedia Media Servers, audio and video SIP IVR, media and conferencing servers for Enterprise and Carriers.
  • Dialexia VoIP Softswitches, IP PBX for medium and enterprise organizations, billing servers.
  • IBM WebSphere Application Server - Converged HTTP and SIP container JEE Application Server
  • Interactive Intelligence Windows-based IP PBX for small, medium and enterprise organizations
  • Kerio Operator, IP PBX for small and medium enterprises
  • Microsoft Lync Server 2010 & 2013
  • Mitel Communications Director
  • NEC SV7000 back-to-back user agent SIP PBX
  • NEC UNIVERGE 3C Unified Communications and Collaboration software
  • Nokia Siemens Networks hiQ8000
  • Nortel SCS500
  • Nortel SIP Multimedia Communication Server 5200
  • Objectworld UC Server
  • Oracle Communications Converged Application Server (OCCAS)
  • Oracle WebLogic SIP Server
  • REVE Systems Mobile VoIP, Class 4/5 Softswitch with integrated billing and Bandwidth Optimization products
  • Spirent SIP Server Platform
  • ShoreTel IP phone systems with unified communications and contact center built in
  • Snom One free/blue/yellow (Snom acquired and renamed pbxnsip) (SIP)
  • Speedflow Communications VoIP class 4/5 softswitches with integrated billing, transcoding, SIP-H.323 converter.
  • Sterlite Technologies Neox IPPBX, IMS - ISC, Dial Center - OmniChannel Call Center, IVR products
  • Sun Microsystems Sun GlassFish Communication Server
  • Tadiran Telecom Coral Ipx family and Aeonix softswitch
  • Tandberg Video Communication Server - SIP application server, media server and H.323 gateway
  • TrueConf Server - video conferencing server software, SIP gateway
  • Unify OpenScape Voice, OpenScape 8000 SIP softswitch, mediaserver, ... (SIP)
  • Voice Elements Inventive Labs' .NET Voice Development software and SIP stack platform.
  • Wildix WGW series Unified communication platform up to 5000 users on a single server. Up to 65535 users on WMS network
  • Zultys MX250/MX30 IP PBXs for SMB and enterprise


Free and open-source license[edit]

  • Empathy, using GTK+ libraries and Telepathy framework, GPL
  • Jami, with GTK+/Qt GUI, also supports IAX2 protocol, for Linux, OS X, Windows GPL
  • Jitsi, a Java VoIP and Instant Messaging client with ZRTP encryption, for FreeBSD, Linux, OS X, Windows; LGPL
  • KPhone, using Qt libraries, GPL, for Linux
  • Linphone, with a core/UI separation, the GUI is using GTK+ libraries, for Linux, OS X, Windows, and mobile phones (Android, iPhone, Windows Phone, BlackBerry)
  • MicroSIP, lightweight softphone, using PJSIP stack, for Windows
  • Telephone, OS X softphone written in Cocoa/Swift
  • Twinkle, using Qt libraries, GPL, for Linux
  • Yate client, using Qt libraries,[2] GPL[3]

Proprietary license[edit]

  • Blink, for Mac
  • CounterPath Corporation Bria desktop and mobile carrier-class, enterprise-grade VoIP applications
  • Librestream's 2500 Camera, 5000HD camera, Onsight Cube (wearable/modular camera), Onsight Connect (Windows, iOS, Android).[4]
  • LifeSize Desktop, for Windows
  • Phoner and PhonerLite, for Windows, Voice: G.711, G.722, G.726, GSM, iLBC, Speex, Opus; security: TLS, SRTP, ZRTP
  • Polycom PVX, for Windows. Voice: G.711, G.722, G.722.1, G.728, G.729A, Siren Codec; Video: H.261, H.263, H.264; Data: T.120, People+ Content, H.239, H.323 Annex Q far-end camera control
  • Windows Messenger versions 4 and 5 (not to be confused with Windows Live Messenger or MSN Messenger which do not support SIP)


  • eyeBeam, discontinued in 2018
  • QuteCom, formerly named OpenWengo, using Qt libraries, GPL, for Windows, Mac, and RPM- DEB-based Linux,[5] discontinued in 2016
  • Gizmo5, formerly PhoneGaim, discontinued in 2011

Mobile clients[edit]

Free and open-source license[edit]


Free Sip Server Voip Gateways

  • Jami for Android, iOS; GPL v3
  • Linphone for Android, BlackBerry, iPhone, Windows phone; GPL v2
  • Sipdroid for Android, GPL v3

Proprietary license[edit]

  • Acrobits for iOS and Android
  • CounterPath Corporation Bria Mobile for iOS and Android


  • CSipSimple for Android, GPL v3, discontinued in 2019[6]

Session border controllers[edit]

  • Acme Packet Session Director
  • Audiocodes Mediant
  • Genband Quantix SBC
  • Ingate Systems Ingate SIParators
  • Metaswitch Perimeta

Enabled firewalls[edit]

Free Sip Server Raspberry Pi

  • Check Point VPN-1 firewalls, include complete SIP support for multiple vendors
  • The firewall feature in Cisco IOS includes complete SIP support
  • Cisco PIX/ASA firewalls include complete SIP support
  • D-Link Firewall DFL-210/260/800/860/1600/2500 supports SIP (SIP-ALG) with firmware and above
  • Fortinet, all FortiGates running v280/v300 builds
  • Intertex SIP transparent routers, firewalls and ADSL modems, for broadband deployments and SOHO market
  • Juniper Networks Netscreen and SRX firewalls include complete SIP Application Layer Gateway support
  • LinuxNetfilter's SIP conntrack helper fully understands SIP and can classify (for QOS) and NAT all related traffic
  • Netopia Netopia supports ALG
  • PF, built-in OpenBSD firewall PF can handle the NAT through the 'static-port' directive and the bandwidth control through the built-in queuing system of SIP connections
  • pfSense, a firewall/router distribution based on FreeBSD and PF; has QoS that properly tags VoIP traffic and a SIP proxy package that is available for NATed endpoints. Its functionality can be expanded with packages like FreeSWITCH, a free/open source software communications platform for making SIP, voice and chat driven products.
  • Secure Computing, SnapGear firewall includes siproxd SIP proxy, Sidewinder 7 firewall includes a SIP proxy
  • SonicWall, supports SIP
  • ZyXEL ZyWALL P1, 2Plus, 5 UTM, 35 UTM, 70 UTM, 1050, USG 100, USG 200, USG 300, USG 1000 supports SIP-ALG


Test tools[edit]

  • Codenomicon Defensics: commercial test automation framework
  • Ixia (company) commercial SIP-VoIP and Video test and emulation and load test platform
  • Mu Dynamics: commercial SIP-VoIP, RTSP-IPTV Triple Play service assurance platform

See also[edit]


  1. ^'OpenSER Renamed To Kamailio'. Retrieved 2015-02-20.
  2. ^'Yate client page'. Retrieved 2011-12-01.
  3. ^'Yate official page'. Retrieved 2011-12-01.
  4. ^'Librestream Releases a Fully Managed Onsight SIP Service for Onsight Customers'. 8 May 2009.
  5. ^'homepage'. Retrieved 19 December 2014.
  6. ^

External links[edit]

  • SIP at Curlie
Retrieved from ''

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SIPSession Initiation Protocol
SIPSingle Inline Package
SIPSavings Investment Plan
SIPSerial Interface Protocol
SIPSystem(s) Integration Plan
SIPSystem(s) Implementation Plan
SIPState Implementation Plan (EPA)
SIPStructural Insulated Panel (construction)
SIPSchool Improvement Plan
SIPSystematic Investment Plan (finance)
SIPSociedad Interamericana de Prensa (Spanish: Inter-American Press Association; Miami, FL)
SIPSpecial Interest Project (various organizations)
SIPSystem in a Package
SIPSystem Integrity Protection (security)
SIPSchool Improvement Partner (UK)
SIPSystem Informacji Przestrzennej (Polish: Spatial Information System)
SIPSpanish, Italian and Portuguese (various schools)
SIPShare Incentive Plan
SIPSummer Internship Program
SIPSecond Intermediate Period
SIPScience in Parliament (various locations)
SIPStay-In-Place (engineering construction)
SIPSystem Idle Process (computing)
SIPSoftware in Partnership (est. 2002)
SIPSuzhou Industrial Park (Suzhou, China)
SIPSoftware India Pvt. Ltd.
SIPStill in Progress
SIPSickness Impact Profile
SIPSupplementary Input Panel
SIPSpa Interface Processor
SIPSignal Image Processing
SIPSpecial Interest Publication
SIPSerial Interface Processor
SIPSignaling Point
SIPSession Internet Protocol
SIPSystem Idle Process
SIPSystem Initialization Program
SIPSource Ip
SIPSystem in Package
SIPScsi Interlocked Protocol
SIPSingle Inline Processor
SIPSimple Ip
SIPSwords into Plowshares
SIPScience Internship Program (University of California, Santa Cruz)
SIPSterilization in Place (drug/medicine production)
SIPSpanish Immersion Program (education)
SIPSoft Input Panel
SIPSteam in Place
SIPSilicon Intellectual Property
SIPSchool Improvement Partner (UK education)
SIPSurgical Infection Prevention
SIPSeat Index Point
SIPSPA Interface Processor (Cisco)
SIPSafety Improvement Plan (various organizations)
SIPStation Information Profile (radio)
SIPSMDS Interface Protocol
SIPShelter In Place
SIPSpecial Interest Publication (publishing)
SIPStrategic Investment Program (Australian government)
SIPSocial Integration and Participation (various organizations)
SIPSubmission Information Package
SIPSociety for Invertebrate Pathology (Knoxville, TN)
SIPSemiconductor Intellectual Property
SIPService Information Portal (software)
SIPSingle Inline Package (semiconductor industry)
SIPSimple Internet Protocol
SIPSocial Inclusion Partnership
SIPStochastic Integer Programming
SIPStable-Isotope Probing
SIPSystem Improvement Plan
SIPSocial Information Processing
SIPState Industrial Products
SIPService Improvement Program
SIPShelter Implementation Plan
SIPSignal Input Port
SIPSystem Improvement Program (SINCGARS)
SIPStrategic Implementation Planning (various organizations)
SIPSystem Improvement Program
SIPSignal/Image Processing
SIPSecure Internet Programming (Princeton University)
SIPStickler Involved People
SIPSabic Innovative Plastics
SIPScale Irrigation Project (various organizations)
SIPSchool Intervention Program (various schools)
SIPSocietà Italiana di Psichiatria
SIPSociedad Interamericana de Psicologia
SIPSustainable Industrial Production
SIPSeasonal to Interannual Prediction (World Meteorological Organization)
SIPSindicato de Industriales de Panama (Spanish: Panamanian Industrialists Society, Panama)
SIPStructured Investment Product
SIPSession Invitation Protocol (Internet conferencing, telephony)
SIPSchools Integration Project
SIPStrongly Implicit Procedure
SIPSoftware Installation Plan
SIPStudent Internship Programme
SIPStrategic Inflection Point
SIPSelf-Inspection Program
SIPStandard Interchange Protocol (3M delevolped data transfer protocol for library systems.)
SIPState Implementation Program
SIPSurf in Peace
SIPServer Interface Pod (Dell/Avocent)
SIPScientific Instrument Package (gaming)
SIPSales Incentive Plan
SIPSosyalist Iktidar Partisi (Party of Socialist Power; now Türkiye Komünist Partisi)
SIPSystem Implementation Plan
SIPStreamlined Inspection Program
SIPShut-In Pressure
SIPStatistical Inference Package (mathematics)
SIPStandard Inspection Procedure
SIPShareholder Investment Program (various companies)
SIPService Implementation Plan
SIPSimferopol, Ukraine - Simferopol (Airport Code)
SIPSector Investment Programmes
SIPSocietà Idroelettrica Piemonte
SIPShip In Place
SIPSerial Interface Processor (Cisco)
SIPStructural Integrity Program
SIPStandardization Instructor Pilot
SIPSooner If Possible (Similar to ASAP)
SIPSouthern Independence Party
SIPSpace Interferometry Mission
SIPSafer Internet Plan (various organizations)
SIPStructural Improvement Program (various organizations)
SIPStatistically Improbable Phrase (
SIPSymbolic Input Program
SIPSpontaneous Intestinal Perforation (newborn condition)
SIPSINCGARS Improvement Program
SIPSite Implementation Plan
SIPSeparation Incentive Pay
SIPStaff Inspection Program (US Army)
SIPSingle Integrated Picture
SIPSystem Integration Plan
SIPSenior Inspector of Police
SIPStrain Isolation Pad
SIPSecurity Investment Program
SIPStandard Interface Panel
SIPSimulated Input Processor
SIPSCSI Interlock Protocol
SIPStatewide Implementation Program
SIPStay in Prayer
SIPSoftware Integration Plan
SIPSystem Initialization Table
SIPSupport Information Package (USAP)
SIPSociété Interaméricaine de La Presse (French: Inter American Press Society)
SIPSoul Influenced Product (nightclub in Geneva, Switzerland)
SIPSpecial Investigative Panel
SIPSafety Implementation Plan
SIPSprint Internet Passport
SIPSoft Intellectual Property (integrated circuit designs)
SIPStation Independence Program (PBS)
SIPSatellite Interceptor Program
SIPSoftware Improvement Program
SIPSegment Interface Protocol
SIPStationary Inflection Point
SIPStation Information Packet
SIPSemporna Islands Park (Malaysia)
SIPSmart Installment Plan (Citibank, Pakistan)
SIPScanner Interface Processor
SIPStability Improvement Program
SIPSOGS Invocable Procedure
SIPSystems Integration Panel
SIPStop Internet Plagiarism
SIPSystems Infrastructure Project
SIPStochastic Information Packet
SIPStandard Initial Provisioning
SIPScientific Investigations Plan
SIPStates Inventory Project
SIPSelf-Igniting Phosphorus
SIPSatellite Image Processor
SIPShuttle Interface Panel
SIPShield Isolation Point
SIPSACLANT Intelligence Plan
SIPSignal Inline Package
SIPSeniors Info Plus
SIPSite Investigation Planning
SIPShip Instrumentation Package (US Navy)
SIPSystem Implementation Posture (system documentation)
SIPSMDC Interface Protocol
SIPSystems Intelligence Products Co., Ltd (Japan)
SIPSynchronized Interleaved Polling (Sprint)
SIPSite Information Processor
SIPStep Increase Program
SIPSmall Inverse Problem
SIPSubstituent Interaction Parameter
SIPStatus Indicator Panel
SIPSystems Integration and Protection
SIPSecurity Improvement Process
SIPSubsystem Implementation Plan
SIPSystem/Ship Improvement Plan/Program
SIPStaging Initiation Package
SIPSubmission Input Processing
SIPStandard Installation Plan
SIPSinge Inline Pin
SIPSpecial Intelligence Processing
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