Gizmo5

Gizmo5 (formerly known as Gizmo Project and SIPphone) was a voice over IP communications network and a proprietary freeware soft phone for that network. On November 12, 2009, Google announced that it had acquired Gizmo5. On March 4, 2011, Google announced that the service would be discontinued as of April 3, 2011.

Gizmo5
Original author(s)SIPphone
Developer(s)Google
Initial releaseJuly 2005 (2005-07) (as SIPphone)
Final release
4.0.5.400 (Windows) November 12, 2009 (2009-11-12), 4.0.0.269 (Mac) September 23, 2009 (2009-09-23), 3.1.0.79 (Linux) November 29, 2007 (2007-11-29)
Operating systemMac OS X, Linux, Windows, Internet Tablet OS, Symbian
TypePeer-to-peer internet telephony
LicenseFreeware
Websitewww.gizmovoice.com (Discontinued)

The Gizmo5 network used open standards for call management, Session Initiation Protocol (SIP) and Extensible Messaging and Presence Protocol (XMPP). However, the Gizmo5 client application was proprietary software and used several proprietary codecs, including GIPS and Internet Speech Audio Codec (iSAC).

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