Free VOIP Calling Software

• Ventrilo MIX Client
  VentriloMIX (all versions of ventrilo clients)
  
• Ventrilo MIX
  Ventrilo MIX contains: Ventrilo 2.1, Ventrilo 2.2, Ventrilo 2.3, TeamSpeak2.
  
• Skype
  Skype is free Internet telephony that just works.
  
• VoIPStunt
  Free calls to any regular landline in 35 countries
  
• VentriloMIX
  VentriloMIX (all versions of ventrilo clients)
  
• Yahoo! Messenger with Voice
  Make PC-to-Phone calls for cheaper rates
  
• freevoip
  Free voip dialer. Small download. Call land lines and cell phones all across North America
  
• Firefily VoIP internet Soft phone
  Freshtel's Firefly?is a new way of calling your friends. Using your your Internet connection, you can talk to people online, as well as normal phone and mobile phone.
  
• TeamSpeak
  TeamSpeak 2 Client
  
• Smart Dialer
  Smart Dialer is a IP softphone dialer developed with industry standard protocol H.323 that can handle outbound phone calls from any PC. It has industry standard G.723.1, G.729 and G.711 codec support.
  
• v-Phone Communcation Center
  Vphonet - free worldwilde calls to any phone.
  
• Smart SIP Phone
  Smart Dialer is a IP softphone dialer developed with industry standard protocol SIP that can handle outbound phone calls from any PC. It has industry standard G.723.1 codec support.
  
• AdminsParadise VoIP PBX
  Free Full Featured Enterprise VoIP PBX and Web based Fax Server
  
• VoIP Traffic Administrator
  VoIP Traffic Administrator
  
• DoNaut
  Internet phone and instant messenger add-on
  
• Xtenn softphone
  Xtenn softphone based on sip protocol can make call Pc to phone, pc to landline to international numbers at very cheap cost
  
• CallButler Free For Skype
  A complete Skype telephone PBX system.
  
• SidNet VoIP Softphone
  Talk through your broadband connection. Make all your calls and save up to 90% on your telephone bill!
  
• Vax VoIP SDK
  Vax VoIP SDK is the best way to add Voice Conference in your apps and webpages
  
• PC Video Conference
  PCVideoConference Voice Video Web
  
• SoliCall
  Personalized Noise Reduction & Echo Cancellation Software
  
• [ClosedTalk]
  Secure VoIP for free internet talk in privacy
  
• Vax VoIP activeX SDK
  VoIP activeX to add voice and text chat.
  
• Vphonet
  Vphonet - free worldwilde calls to any phone, video conferencing and SMS service.
  
• CallButler Unlimited
  A complete easy-to-use VoIP telephone system.
  
• Carousel Telephony Adapter
  Connect VoIP to ordinary phone lines
  
• MiaRec by Duxoft
  MiaRec records your VOIP calls.
  
• VoipInformer
  Searching for the new partners takes a lot of time and effort. Install free VoipInformer utility and you will be notified as soon as the new providers will be published in a voiproviderslist.com
  
• Raketu ipTV
  Communicate...be informed...be entertained
  
• OfficeSIP Server
  Free voice calling and instant messaging
  
• Solution4VOIP VoipSwitch
  Solution4VOIP.com Voipswitch 2.0.0.955
  
• voikap
  The Italian VoIP software cliet.
  
• CallButler Professional For Skype
  A complete Skype telephone PBX system.
  
• conaito VoIP ActiveX SDK
  conaito VoIP ActiveX library for developers
  
• 4PSA VoipNow Express edition
  Free Linux IP PBX server software
  
• VOIP Quick Guide
  A comprehensive VOIP technology guide for network and telecom pros
  
• VGSP
  SIP Softphone/Dialer Customization, Circumvent VoIP blocking
  
• VGSC
  Encrypt VoIP any existing device and softphone to bypass VoIP blockage
  
• ENUMresolver
  Get ENUM NAPTR mapping for VOIP phone number.