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Phoner (1,103)
<img src="http://www.phoner.de/images/Logo.jpg" alt="image" />
"<i>Phoner is a freeware application for Microsoft Windows, from Win2k up to Win7.
This application enables voice connections to landline , cellular network and VoIP .Phoner can be used as softphone on stationary and mobilecomputer devices attached to anlogue or digital (ISDN) subscriber lines and as SIP client. </i>
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QuteCom (985)
<img src="http://trac.qutecom.org/chrome/site/logo.png" alt="[QuteCom]" />
Anteriormente conocido como <b>WengoPhone</b>.
<i>" Qutecom is a free, SIP compatible VoIP softphone initially developed by Wengo. QuteCom supports a range of VoIP codecs including G.729, G.711, iLBC, G.722 (wideband) and Speex. H.263 for video is also supported.</i>"
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SFLphone (800)
<img src="http://www.sflphone.org/sites/default/files/basic_logo.png" width="137" alt="image" />
"<i>SFLphone is a robust standards-compliant enterprise softphone, for desktop and embedded systems. It is designed to handle several hundreds of calls a day. SFLphone is available under the GNU GPL license, version 3.</i>"
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SJphone (643)
<img src="http://www.sjlabs.com/images/sj-logo.gif" alt="image" />
<i>SJphone® is a VOIP softphone that allows you to speak with any other softphone running on a PC/PDA, any stand-alone IP-phone, or using Internet Telephony Service Provider (ITSP) with any traditional wired or mobile phone. It supports SIP and is fully inter-operable with most major VOIP vendors and ITSPs.</i>"
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Twinkle (874)
<img src="http://www.xs4all.nl/~mfnboer/twinkle/images/twinkle-logo-big.jpg" alt="image" />
"<i>Twinkle is a softphone for your voice over IP and instant messaging communcations using the SIP protocol. You can use it for direct IP phone to IP phone communication or in a network using a SIP proxy to route your calls and messages. </i>"
Solo para Linux
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wxCommunicator (960)
"<i>wxCommunicator is a cross platform SIP softphone written in C++ utilizing customized sipXtapi user agent library and wxWidgets 2.8.9 GUI library</i>"
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X-Lite (617)
Este es uno de los Softphones de interface mas amigable.<br />
Versiones para: GNU/Linux, Windows, Mac<br />
<img src="http://www.counterpath.com/assets/images/831/xlite30.jpg" alt="image" />
OS: Mac,Windows
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YakaPhone (1,286)
"<i>"Simple, skinnable IAX/IAX2 and SIP softphone from YakaSoftware.</i>
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Zoiper (4,566)
<img src="http://www.zoiper.com/images/image_5b.png" alt="image" />
"<i>Zoiper is available for Windows, Mac OS X and Linux and supports the following languages: English, German, Spanish, French, Dutch, Portuguese, Russian, Chinese, Japanese, Italian, Polish, Magyar. </i>"