This list of SIP software documents notable

software application Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consists ...

s which use

Session Initiation Protocol The Session Initiation Protocol (SIP) is a signaling protocol used for initiating, maintaining, and terminating communication sessions that include voice, video and messaging applications. SIP is used in Internet telephony, in private IP telepho ...

(SIP) as a

voice over IP Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of speech, voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms In ...

(VoIP) protocol.

Servers

Free and open-source license

A SIP server, also known as a SIP proxy, manages all SIP calls within a network and takes responsibility for receiving requests from user agents for the purpose of placing and terminating calls. *

Asterisk The asterisk ( ), from Late Latin , from Ancient Greek , ''asteriskos'', "little star", is a typographical symbol. It is so called because it resembles a conventional image of a heraldic star. Computer scientists and mathematicians often voc ...

* Cipango SipServlets 1.1 application server *

ejabberd ejabberd is an Extensible Messaging and Presence Protocol (XMPP) application server and an MQ Telemetry Transport (MQTT) broker, written mainly in the Erlang programming language. It can run under several Unix-like operating systems such as ma ...

FreeSWITCH FreeSWITCH is free and open-source server software for real-time communication applications, including WebRTC, video, and voice over Internet Protocol (VoIP). It runs on Linux, Windows, macOS, and FreeBSD. FreeSWITCH is used to build private bran ...

FreePBX FreePBX is a web-based open-source graphical user interface (GUI) that manages Asterisk, a voice over IP and telephony server. FreePBX is licensed under the GNU General Public License version 3. It is a component of the FreePBX Distro, which is ...

* GNU SIP Witch * Issabel, fork of

Elastix Elastix is an unified communications server software that brings together IP PBX, email, IM, faxing and collaboration functionality. It has a Web interface and includes capabilities such as a call center software with predictive dialing. The El ...

Kamailio Kamailio, formerly OpenSER (and sharing some common history with SIP Express Router (SER)), is a SIP server licensed under the GPL-2.0-or-later license. It can be configured to act as a SIP registrar, proxy or redirect server, and features pre ...

, formerly OpenSER * Mobicents Platform (JSLEE 1.0 compliant and SIP Servlets 1.1 compliant application server) * Mysipswitch *

OpenSIPS Kamailio, formerly OpenSER (and sharing some common history with SIP Express Router (SER)), is a Session Initiation Protocol, SIP server licensed under the GNU General Public License, GPL-2.0-or-later license. It can be configured to act as a SI ...

, fork of OpenSER * SailFin *

SIP Express Router Kamailio, formerly OpenSER (and sharing some common history with SIP Express Router (SER)), is a Session Initiation Protocol, SIP server licensed under the GNU General Public License, GPL-2.0-or-later license. It can be configured to act as a SI ...

(SER) *

Enterprise Communications System sipXecs sipXecs is a free software enterprise communications system. It was initially developed by Pingtel Corporation in 2003 as a voice over IP telephony server located in Boston, MA. The server was later extended with additional collaboration capab ...

Yate Yate is a town and civil parish in South Gloucestershire, England. It lies just to the southwest of the Cotswolds, Cotswold Hills and is northeast of Bristol city centre and from the centre of Bath, Somerset, Bath, with regular rail services ...

Proprietary license

3Com 3Com Corporation was an American digital electronics manufacturer best known for its computer network products. The company was co-founded in 1979 by Robert Metcalfe, Howard Charney and others. Bill Krause joined as President in 1981. Metcalfe ex ...

VCX IP telephony module: back-to-back user agent SIP PBX * 3CX Phone System, for Windows, Debian 8 GNU/Linux *

Aastra Aastra Technologies Limited, formerly headquartered in Concord, Ontario, Canada, made products and systems for accessing communication networks, including the Internet. Its products included residential and business telephone terminals, screen ...

5000, 800, MX-ONE *

Alcatel-Lucent Alcatel–Lucent S.A. () was a French–American global telecommunications equipment company, headquartered in Boulogne-Billancourt, France. It was formed in 2006 by the merger of France-based Alcatel and U.S.-based Lucent, the latter being a su ...

5060 IP Call server *

Aricent Aricent was a global design and engineering services company. It was acquired by French-based company Altran in 2018 and renamed Altran North America in April 2019 and Altran Americas in early 2020. With Altran's acquisition by Capgemini, the ...

SIP UA stack, B2BUA, proxy, VoLTE/RCS Client *

AskoziaPBX AskoziaPBX is a closed source telephone system (or " PBX") firmware. It is a fork of the m0n0wall project and uses the Asterisk private branch exchange (PBX) software to realize all telephony functions. Prior to version 2.1, AskoziaPBX was rele ...

Avaya Application Server 5300 Avaya Holdings Corp., often shortened to Avaya (), is an American multinational technology company headquartered in Durham, North Carolina, that provides cloud communications and workstream collaboration services. The company's platform includ ...

(AS5300),

JITC The Joint Interoperability Test Command (JITC) is a wing of the United States Department of Defense that tests and certifies information technology products for military use. History The JITC had its roots in the TRI-TAC program of the 1970s, wh ...

certified ASSIP VoIP *

Bicom Systems Bicom Systems is a producer and vendor of Asterisk (PBX)-based unified communications devices for VoIP businesses. Bicom Systems uses open standards telephony. Products include all of the software and hardware components involved in building a V ...

IP PBX for telecoms *

Brekeke SIP Server Brekeke SIP Server is a SIP-based SIP Proxy Server and Registrar. This software was previously known as OnDO SIP Server from 2003 to 2006. Brekeke Software, Inc. released the second version of the software in 2007 and changed its name to Brekeke S ...

, SIP proxy, SIP registrar, SIP NAT, TCP/UDP *

Brekeke PBX Brekeke PBX is a SIP-based IP- PBX system. This software was previously known as OnDO PBX from 2004 to 2006. Brekeke Software, Inc. released Version 2 of this software in 2007 and changed its name to Brekeke PBX. This software allows the user t ...

, SIP PBX for service providers and enterprises *

Cisco Cisco Systems, Inc., commonly known as Cisco, is an American-based multinational digital communications technology conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware, ...

SIP Proxy Server, Cisco unified border element (CUBE), Cisco Unified Communication Manager (CUCM) *

CommuniGate Pro CommuniGate Pro (CGatePro) is a highly scalable carrier grade unified communications server, as well as a development platform. The system is Internet Protocol based. The server is a single process, multi-threaded application written entirely in ...

, virtualized PBX for IP Centrex hosting, voicemail services, self-care, ... *

Comverse Technology Comverse Technology, Inc., often referred to as simply Comverse, was a technology company located in Woodbury, New York in the United States, that developed and marketed telecommunications software. The company focused on providing value-added ...

softswitch, media applications, SIP registrars *

Creacode SIP Application Server {{Infobox Software , name = Creacode SIP Application Server , logo = , screenshot = , caption = , developer = Creacode Ltd. , released = 2006 , ope ...

Real-time SIP call controller and IVR product for carrier-class VoIP networks *

Dialogic Corporation Dialogic is an American multinational technology company headquartered in Parsippany, New Jersey, United States, with operations in over 25 countries. Dialogic provides a cloud-optimized communications technology for real-time communications me ...

Powermedia Media Servers, audio and video SIP IVR, media and conferencing servers for Enterprise and Carriers. *

Dialexia Dialexia Communications, Inc. is a privately held Canadian corporation headquartered in Montréal, Quebec, that develops, manufactures, and sells VoIP-based Telecommunication products and services. The company specializes in the development of we ...

VoIP Softswitches, IP PBX for medium and enterprise organizations, billing servers. *

IBM WebSphere Application Server WebSphere Application Server (WAS) is a software product that performs the role of a web application server. More specifically, it is a software framework In computer programming, a software framework is an abstraction in which software, ...

- Converged HTTP and SIP container JEE Application Server *

Interactive Intelligence Interactive Intelligence was a telecommunications software and cloud computing development company that provided unified business communications solutions for call centers, Voice over IP companies, and business process automation. In December 2 ...

Windows-based IP PBX for small, medium and enterprise organizations * Kerio Operator, IP PBX for small and medium enterprises *

Microsoft Lync Server Skype for Business Server (formerly Microsoft Office Communications Server and Microsoft Lync Server) is real-time communications server software that provides the infrastructure for enterprise instant messaging, presence, VoIP, ad hoc and st ...

2010 & 2013 *

Mitel Mitel Networks Corporation is a Canadian telecommunications company. The company previously produced TDM PBX systems and applications, but after a change in ownership in 2001, now focuses almost entirely on Voice-over-IP (VoIP) products. Mitel ...

Communications Director *

NEC is a Japanese multinational corporation, multinational information technology and electronics corporation, headquartered in Minato, Tokyo. The company was known as the Nippon Electric Company, Limited, before rebranding in 1983 as NEC. It prov ...

SV7000 back-to-back user agent SIP PBX *

UNIVERGE 3C Unified Communications and Collaboration software *

Nokia Siemens Networks Nokia Networks (formerly Nokia Solutions and Networks (NSN) and Nokia Siemens Networks (NSN)) is a multinational data networking and telecommunications equipment company headquartered in Espoo, Finland, and wholly owned subsidiary of Nokia Corp ...

hiQ8000 *

Nortel Nortel Networks Corporation (Nortel), formerly Northern Telecom Limited, was a Canadian multinational telecommunications and data networking equipment manufacturer headquartered in Ottawa, Ontario, Canada. It was founded in Montreal, Quebec, ...

SCS500 *

SIP Multimedia Communication Server 5200 * Objectworld UC Server *

Oracle An oracle is a person or agency considered to provide wise and insightful counsel or prophetic predictions, most notably including precognition of the future, inspired by deities. As such, it is a form of divination. Description The word '' ...

Communications Converged Application Server (OCCAS) *

WebLogic SIP Server *

Spirent Spirent Communications plc is a British Multinational corporation, multinational telecommunications testing company headquartered in Crawley, West Sussex, in the United Kingdom. It is listed on the London Stock Exchange and is a constituent of t ...

SIP Server Platform *

ShoreTel ShoreTel, Inc. was a telecommunications vendor providing unified communications for business. In 2017, the company was acquired by Mitel. History In September 1996, ShoreTel was co-founded as Shoreline Teleworks by Edwin J. Basart and Mike Harrig ...

IP phone systems with unified communications and contact center built in *

Snom Snom Technology GmbH is a German company which manufactures Voice over Internet Protocol (VoIP) telephones, based on the IETF standard Session Initiation Protocol (SIP). Snom's products are targeted at the small- to medium-sized business secto ...

One free/blue/yellow (Snom acquired and renamed

pbxnsip Pbxnsip is a software implementation of a telephone private branch exchange (PBX) produced by a company of the same name. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services includin ...

) (SIP) * Speedflow Communications VoIP class 4/5 softswitches with integrated billing, transcoding, SIP-H.323 converter. *

Sterlite Technologies Sterlite Technologies Limited (Formerly Sterlite Tech) is an Indian multinational technology company, headquartered in Mumbai. It is listed on Bombay Stock Exchange and National Stock Exchange of India. It has 636 patents and is active in over ...

Neox IPPBX, IMS - ISC, Dial Center - OmniChannel Call Center, IVR products *

Sun Microsystems Sun Microsystems, Inc. (Sun for short) was an American technology company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, the ...

Sun GlassFish Communication Server *

Tadiran Telecom Tadiran Telecom (TTL) L.P., is a privately held Israeli Unified Communications and Collaboration (UC&C) company, providing UC&C systems globally. TTL is owned by Afcon Industries, which in turn is controlled by the Shlomo Group (TASE:SHLD), ...

Coral Ipx family and Aeonix softswitch * Tandberg Video Communication Server - SIP application server, media server and H.323 gateway * Unify OpenScape Voice, OpenScape 8000 SIP softswitch, mediaserver, ... (SIP) * Voice Elements Inventive Labs' .NET Voice Development software and SIP stack platform. * Zultys MX250/MX30 IP PBXs for SMB and enterprise

Clients

Free and open-source license

Jami Nūr ad-Dīn 'Abd ar-Rahmān Jāmī ( fa, نورالدین عبدالرحمن جامی; 7 November 1414 – 9 November 1492), also known as Mawlanā Nūr al-Dīn 'Abd al-Rahmān or Abd-Al-Rahmān Nur-Al-Din Muhammad Dashti, or simply as J ...

, with

GTK GTK (formerly GIMP ToolKit and GTK+) is a free and open-source cross-platform widget toolkit for creating graphical user interfaces (GUIs). It is licensed under the terms of the GNU Lesser General Public License, allowing both free and propriet ...

/ Qt GUI, also supports

IAX2 Inter-Asterisk eXchange (IAX) is a communications protocol native to the Asterisk private branch exchange (PBX) software, and is supported by a few other softswitches, PBX systems, and softphones. It is used for transporting VoIP telephony sessi ...

protocol, for Linux, OS X, Windows

GPL The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general u ...

Jitsi Jitsi is a collection of free and open-source multiplatform voice (VoIP), video conferencing and instant messaging applications for the web platform, Windows, Linux, macOS, iOS and Android. The Jitsi project began with the Jitsi Desktop (previous ...

, a

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ...

VoIP and Instant Messaging client with

ZRTP ZRTP (composed of Z and Real-time Transport Protocol) is a cryptographic key-agreement protocol to negotiate the keys for encryption between two end points in a Voice over IP (VoIP) phone telephony call based on the Real-time Transport Protocol. I ...

encryption, for

FreeBSD FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution (BSD), which was based on Research Unix. The first version of FreeBSD was released in 1993. In 2005, FreeBSD was the most popular ...

Linux Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which ...

OS X macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac computers. Within the market of desktop and lapt ...

Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...

;

LGPL The GNU Lesser General Public License (LGPL) is a free-software license published by the Free Software Foundation (FSF). The license allows developers and companies to use and integrate a software component released under the LGPL into their own ...

Linphone __NOTOC__ Linphone (contraction of ''Linux phone'') is a free voice over IP softphone, SIP client and service. It may be used for audio and video direct calls and calls through any VoIP softswitch or IP-PBX. Linphone also provides the possibilit ...

, with a core/UI separation, the GUI is using

libraries, for Linux, OS X, Windows, and mobile phones (Android, iPhone, Windows Phone, BlackBerry) * MicroSIP, lightweight softphone, using PJSIP stack, for Windows *

Telephone A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into e ...

, OS X softphone written in

Cocoa Cocoa may refer to: Chocolate * Chocolate * ''Theobroma cacao'', the cocoa tree * Cocoa bean, seed of ''Theobroma cacao'' * Chocolate liquor, or cocoa liquor, pure, liquid chocolate extracted from the cocoa bean, including both cocoa butter and ...

Swift Swift or SWIFT most commonly refers to: * SWIFT, an international organization facilitating transactions between banks ** SWIFT code * Swift (programming language) * Swift (bird), a family of birds It may also refer to: Organizations * SWIFT, ...

Twinkle Twinkle may refer to: * Twinkling, the variation of brightness of distant objects People * Twinkle (singer) (1948–2015), born Lynn Annette Ripley, English singer-songwriter * Twinkle Khanna, Indian movie actress * Twinkle Bajpai, female conte ...

, using Qt libraries, GPL, for Linux * Yate client, using Qt libraries, GPL

Proprietary license

Blink Blinking is a bodily function; it is a semi-autonomic rapid closing of the eyelid. A single blink is determined by the forceful closing of the eyelid or inactivation of the levator palpebrae superioris and the activation of the palpebral portio ...

, for Mac *

Librestream Librestream Technologies Inc. is a privately owned, venture capital–backed company based in Winnipeg, Canada. Librestream provides technologies that enable mobile and remote enterprise collaboration. Librestream is known for its unique hand-held ...

's 2500 Camera, 5000HD camera, Onsight Cube (wearable/modular camera), Onsight Connect (Windows, iOS, Android). *

LifeSize Lifesize is a video and audio telecommunications company in the United States which provides high definition videoconferencing endpoints and accessories, touchscreen conference room phones and a cloud-based video collaboration platform. Lifesiz ...

Desktop, for Windows *

Phoner Phoner and PhonerLite are softphone applications for Windows operating systems available as freeware. Phoner is a multiprotocol telephony application supporting telephony via CAPI, TAPI and VoIP, while PhonerLite provides a specialized and optim ...

and PhonerLite, for Windows, Voice:

G.711 G.711 is a narrowband audio codec originally designed for use in telephony that provides toll-quality audio at 64 kbit/s. G.711 passes audio signals in the range of 300–3400 Hz and samples them at the rate of 8,000 samples per second ...

G.722 G.722 is an ITU-T standard 7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM (SB-ADPCM). The corresponding narrow-band codec based on ...

G.726 G.726 is an ITU-T ADPCM speech codec standard covering the transmission of voice at rates of 16, 24, 32, and 40 kbit/s. It was introduced to supersede both G.721, which covered ADPCM at 32 kbit/s, and G.723, which described ADPCM for ...

GSM The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such as ...

iLBC Internet Low Bitrate Codec (iLBC) is a royalty-free narrowband speech audio coding format and an open-source reference implementation (codec), developed by Global IP Solutions (GIPS) formerly Global IP Sound (acquired by Google Inc in 2011). It w ...

Speex Speex is an audio compression codec specifically tuned for the reproduction of human speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm.Xiph.OrIntrodu ...

Opus ''Opus'' (pl. ''opera'') is a Latin word meaning "work". Italian equivalents are ''opera'' (singular) and ''opere'' (pl.). Opus or OPUS may refer to: Arts and entertainment Music * Opus number, (abbr. Op.) specifying order of (usually) publicatio ...

; security: TLS, SRTP,

Polycom Poly, formerly Polycom, a part of HP Inc., is an American multinational corporation that develops video, voice and content collaboration and communication technology. Polycom was co-founded in 1990 by Brian L Hinman and Jeffrey Rodman. In 2018 ...

PVX, for Windows. Voice:

, G.722.1, G.728,

G.729 G.729 is a royalty-free narrow-band vocoder-based audio data compression algorithm using a frame length of 10 milliseconds. It is officially described as ''Coding of speech at 8 kbit/s using code-excited linear prediction'' speech coding (CS-ACEL ...

Siren Codec Siren is a family of patented, transform-based, wideband audio coding formats and their audio codec implementations developed and licensed by PictureTel Corporation (acquired by Polycom, Inc. in 2001). There are three Siren codecs: Siren 7, Siren 1 ...

; Video:

H.261 H.261 is an ITU-T video compression standard, first ratified in November 1988. It is the first member of the H.26x family of video coding standards in the domain of the ITU-T Study Group 16 Video Coding Experts Group (VCEG, then Specialists Gro ...

, H.263,

H.264 Advanced Video Coding (AVC), also referred to as H.264 or MPEG-4 Part 10, is a video compression standard based on block-oriented, motion-compensated coding. It is by far the most commonly used format for the recording, compression, and distr ...

; Data:

T.120 T.120 is a suite of point-to-multipoint communication protocols for teleconferencing, videoconferencing, and computer-supported collaboration. It provides for application sharing, online chat, file sharing, and other functions. The protocols ar ...

, People+ Content,

H.239 H.239 is an ITU-T recommendation from the H.32x Multimedia Communications' macrofamily of standards for multimedia communications over various networks. The H.239 recommendation is titled "''Role management and additional media channels for H.3xx- ...

, H.323 Annex Q far-end camera control *

Windows Messenger Windows Messenger is a discontinued instant messaging client included in Windows XP. Designed for use by both corporate and home users, it was originally created, in 2001, as a streamlined and integrated version of MSN Messenger. It was upgrade ...

versions 4 and 5 (not to be confused with

Windows Live Messenger MSN Messenger (also known colloquially simply as "Messenger"), later rebranded as Windows Live Messenger, was a cross-platform instant messaging client, instant-messaging client developed by Microsoft. It connected to the Microsoft Messenger ser ...

or MSN Messenger which do not support SIP)

Discontinued

QuteCom QuteCom (previously called WengoPhone) was a free-software SIP-compliant VoIP client developed by the QuteCom (previously OpenWengo) community under the GPL-2.0-or-later license. It allows users to speak to other users of SIP-compliant VoIP sof ...

, formerly named OpenWengo, using Qt libraries, GPL, for Windows, Mac, and RPM- DEB-based Linux, discontinued in 2016 * Gizmo5, formerly PhoneGaim, discontinued in 2011 *Empathy (software), Empathy, using

libraries and Telepathy (software), Telepathy framework, GPL, discontinued in earliest visible, 2021.

Mobile clients

Free and open-source license

for Android, iOS; GPL v3 *

for Android, BlackBerry, iPhone, Windows phone; GPL v2 * Sipdroid for Android, GPL v3

Proprietary license

* Acrobits 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 *

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 (SIP-ALG) 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 small office/home office, SOHO market * Juniper Networks Netscreen and SRX firewalls include complete SIP Application Layer Gateway support *

Netfilter's SIP conntrack helper fully understands SIP and can classify (for QOS) and network address translation, NAT all related traffic * Netopia Netopia supports ALG * PF (firewall), 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 (computing), firewall/residential gateway, router distribution based on

and PF (firewall), 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

, 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 (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

References

External links

* {{DEFAULTSORT:SIP Lists of software VoIP software Videotelephony

Servers

Free and open-source license

Proprietary license

Clients

Free and open-source license

Proprietary license

Discontinued

Mobile clients

Free and open-source license

Proprietary license

Discontinued

Session border controllers

Enabled firewalls

Libraries

Test tools

See also

References

External links