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Zoiper - Free VoIP SIP softphone dialer with voice, video and …
TOP 5 Free SIP Softphones - IPComms
MicroSIP - lightweight VoIP SIP softphone for Windows - Official …
Top Free SIP Apps for Your Computer - Lifewire
20 FREE SIP Softphones - VoIP Insider
Linphone open source VoIP SIP softphone - voice, video and …
Download Zoiper 5, a free VoIP softphone :: Zoiper
Ekiga ~ Free Your Speech
MicroSIP Downloads - Installer and Portable version
MicroSIP Download Free - 3.21.5 - TechSpot