· VoIP providers: Biztrans CallServe phonecall with fixed phones through IP DeltaThree DotCom FireFly using VoIP H.323; freeware HotTelephone phonecall with fixed phones through IP Howdy Corp. Free Internet calls for IP to IP phones Iscom Lowrate VoIP Net2Phone CommCenter, phonecall with fixed phones through IP Ringtime including video conferencing Rits tele.com or Pilmo VoiceFinder, phonecall with fixed phones through IP (since March 2004 part of BBned) VoIP Buster VoIPster VoIPstunt Webcalldirect · Skype and skype related products: Pamela answeringmachine plugin for Skype (basic version = freeware) SAM answeringmachine plugin for Skype (freeware) Skype using proprietair protocol; freeware Skypeteer several plugins for Skype (freeware) Video4Skype Video conference plugin for Skype (freeware) · other VoIP products: eyeBeam using SIP protocol Gizmo using SIP protocol; freeware Nero SIPPs using SIP protocol; freeware VoIP Buster using proprietair protocol; freeware VoIPster using SIP protocol; freeware X-Lite using SIP protocol; freeware Woize VoIP H.323; freeware Zfone encrypt your VOIP - SIP related call (freeware)