|Original author(s)||Emil Ivov|
|Developer(s)||Jitsi Team and Contributors
|Stable release||2.4 (build.4997) (January 7, 2014[±])|
|Preview release||2.5 (nightly) [±]|
|Operating system||Linux, Mac OS X, Windows (all Java supported)|
|Size||33 MB – Windows
23 MB – Mac OS X
16 MB – GNU/Linux
60 MB – source code
|Available in||Asturian, English, French, German, Bulgarian, Japanese, Spanish, Italian, Romanian, Greek and 25 more|
|Type||Voice over Internet Protocol / instant messaging / videoconferencing|
Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application for Windows, Linux and Mac OS X. It supports several popular instant messaging and telephony protocols, including open recognised encryption protocols for chat (OTR) and voice/video/streaming and voice/video conferencing (SIP/RTP/SRTP/ZRTP), as well as built-in IPv6, NAT traversal and DNSSEC. Jitsi and its source code are released under the terms of the LGPL.
- Attended and blind call transfer
- Auto away
- Auto re-connect
- Auto answer and Auto Forward
- Call recording
- Call encryption with SRTP and ZRTP
- Conference calls
- Direct media connection establishment with the ICE protocol
- Desktop Streaming
- Encrypted password storage using a master password
- File transfer for XMPP, AIM/ICQ, Windows Live Messenger, YIM
- Instant messaging encryption with OTR
- IPv6 support for SIP and XMPP
- Media relaying with the TURN protocol
- Message Waiting Indication (RFC 3842)
- Voice and video calls for SIP and XMPP using H.264 and H.263 or VP8 for video encoding
- Wideband audio with SILK, G.722, Speex and Opus
- DTMF support with SIP INFO, RTP (RFC 2833/RFC 4733), In-band
- Zeroconf via mDNS/DNS-SD (à la Apple's Bonjour)
- Group video support (Jitsi Videobridge)
- Packet loss concealment with the SILK and Opus codecs
The following protocols are currently supported by Jitsi:
- MSNP (Microsoft Messenger service, commonly known as MSN, .NET, or Live; no multimedia support)
- OSCAR (AIM/ICQ/MobileMe)
- XMPP/Jingle (Google Talk, LJ Talk, Gizmo5, Facebook Chat, …)
- YMSG (YIM; only basic chat and file transfers)
Jitsi is mostly written in Java which helps reuse most of the same code over the various operating systems it works on. Its GUI is based upon Swing. The project also uses native code for the implementation of platform specific tasks such as audio/video capture and rendering, IP address selection, and access to native popup notification systems such as Growl.
If Jitsi were to properly handle IPv6 it would be especially interesting for direct PC-to-PC (peer-to-peer) communication, for instance, if both sides were 'trapped' behind NAT routers, but could obtain a reachable IPv6 address via a tunnel-broker. Unfortunately, Jitsi is only capable of point-to-point connections over IPv4, as its IPv6 implementation of the feature is presently broken to the point of unusability.
Work on Jitsi (then SIP Communicator) started in 2003 in the context of a student project by Emil Ivov at the University of Strasbourg. It was originally released as an example video phone in the JAIN-SIP stack and later spun off as a standalone project.
Originally the project was mostly used as an experimentation tool because of its support for IPv6. Through the years, as the project gathered members, it also added support for protocols other than SIP.
Jitsi has received support from various institutions such as the NLnet Foundation, the University of Strasbourg and the Region of Alsace and it has also had multiple participations in the Google Summer of Code program.
In 2009, Emil Ivov founded the BlueJimp company which has employed some of Jitsi's main contributors in order to offer professional support and development services related to the project.
In 2011, after successfully adding support for Audio/Video communication over XMPP’s Jingle extensions, the project was renamed to Jitsi since it was no longer "a SIP only Communicator". This name originates from the Bulgarian "жици" (wires).
- Comparison of instant messaging protocols
- Comparison of instant messaging clients
- Comparison of VoIP software
|This article relies on references to primary sources. (April 2012)|
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- "(SIP Communicator) | Documentation / FAQ § How do you spell Jitsi and what does it mean?". Jitsi. Retrieved 2013-06-08.
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