List of SIP software

Servers

Free and open-source license

• Asterisk
• Cipango SipServlets 1.1 application server
• ejabberd
• FreeSWITCH
• FreePBX
• GNU SIP Witch
• Issabel, fork of Elastix
• Kamailio, formerly OpenSER
• Mobicents Platform
• Mysipswitch
• OpenSIPS, fork of OpenSER
• SailFin
• SIP Express Router
• Enterprise Communications System sipXecs
• Yate

  Proprietary license

• 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
• AskoziaPBX
• Avaya Application Server 5300, 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, Cisco Unified Communication Manager
• 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
• 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
• 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,...
• 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

  Clients

Free and open-source license

• Blink, OSX, Linux, and Windows
• Ekiga, formerly named GnomeMeeting, GPL
• 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
• MicroSIP, lightweight softphone, using PJSIP stack, for Windows
• QuteCom, formerly named OpenWengo, using Qt libraries, GPL, for Windows, Mac, and RPM- DEB-based Linux
• Telephone, OS X softphone written in Cocoa/Swift
• Twinkle, using Qt libraries, GPL, for Linux
• Yate client, using Qt libraries, GPL

  Proprietary license

• Blink, for Mac
• CounterPath Corporation Bria desktop and mobile carrier-class, enterprise-grade VoIP applications
• Librestream's 2500 Camera, 5000HD camera, Onsight Cube, Onsight Connect.
• 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

  Discontinued

• eyeBeam, discontinued in 2018
• Gizmo5, formerly PhoneGaim, discontinued in 2011

  Mobile clients

Free and open-source license

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

  Proprietary license

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

  Discontinued

• CSipSimple for Android, GPL v3, discontinued in 2019

  Session border controllers

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

  Enabled firewalls

• 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 with firmware 2.20.01.05 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
• Linux Netfilter's SIP conntrack helper fully understands SIP and can classify 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

  Libraries

• oSIP

  Test tools

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