Developer(s) GNU Project License GPL (free software) | Available in C++ | |
Stable release 1.8.3 / 18 September 2013; 3 years ago (2013-09-18) Platform GNU/Linux, Mac OS X, BSD, Windows Website www.gnu.org/software/sipwitch | ||
GNU SIP Witch is a free SIP server software with Peer-to-peer capabilities from the GNU Project. It is the GNU implementation of the Session Initiation Protocol (SIP), which is being used for the routing of the calls.
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Availability
SIP Witch is released as free software under the terms of version 3 or later of the GNU General Public License (GPL). It is designed for Linux, Mac OS X, BSD and Windows and planned support for Android. In the popular GNU/Linux distributions Ubuntu and Fedora it may be installed directly from the standard package sources.
Technology
SIP Witch is written in the programming language C++ and uses the uCommon, eXosip and GNU oSIP libraries.
Features
The software enables Voice over IP as part of a self-organising Peer-to-peer telephone network. It supports features like call forwarding, call distribution, call hold, presence information and (text) messages, supports encrypted calls and also enables NAT traversal to establish the peer-to-peer connections.
History
The SIP Witch is being developed since the 10th of August 2007 by David Sugar within the GNU Telephony project. The first version was 0.1.0. Version 1 was released on May 14, 2011. It is being used as a component of GNU Free Call, which is supposed to be an alternative to Skype.