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Sip-Creator
Submission information package creator...
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SIP Communicator
Java based VoIP and instant messaging client...
SIP Inspector
Free and open source utility that will simulate SIP messages and scenarios...
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SIP Proxy
Program that will allow you to manipulate SIP traffic...
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Sofia-SIP
Open-source SIP User-Agent library, compliant with the IETF RFC3261 specification...
SIP Express Router
SIP Express Router - Very fast and very flexible SIP server...
GNU SIP Witch
Call and registration server for the SIP protocol...
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Distributed SIP Analyzer
Free and open source SIP message analyzer...
Sip Audio Feeding Agent
A free and open source SIP live audio feeding agent...
PJSIP
Flexible, small protocol stack for your Mac...
XMeeting
Open source Cocoa based video conferencing and VoIP client...
symPhonie
Allows you to make calls directly from your computer....
SJphone
SIP & H.323 softphone for most major telephony vendors...
Siproxd
Proxy/masquerading daemon for the SIP protocol...
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