| Original author(s) | SIPphone |
|---|---|
| Developer(s) | |
| Initial release | July 2005 (as SIPphone) |
| Final release | 4.0.5.400 (Windows) November 12, 2009, 4.0.0.269 (Mac) September 23, 2009, 3.1.0.79 (Linux) November 29, 2007
|
| Operating system | Mac OS X, Linux, Windows, Internet Tablet OS, Symbian |
| Type | Peer-to-peer internet telephony |
| License | Freeware |
| Website | www |
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.[1] On March 4, 2011, Google announced that the service would be discontinued as of April 3, 2011.[2]
The Gizmo5 network used open standards for call management, Session Initiation Protocol (SIP) and Extensible Messaging and Presence Protocol (XMPP).[3] However, the Gizmo5 client application was proprietary software and used several proprietary codecs, including GIPS and Internet Speech Audio Codec (iSAC).[citation needed]