DialPad
Make free pc-to-pc calls worldwide and call regular and mobile phones for as low as 1¢ a minute. get a phone in number to receive calls on your pc.
http://www.dialpad.com/
Alles over bellen via internet
Go2call offers a wide range of voip services including pc to phone, voip phone, voip reseller, broadband phone.
http://www.go2call.com/
Easy2Reach.nl
Second life
http://www.easy2reach.nl/
Net2Phone => via IP
Net2Phone => via IP
http://www.net2phone.com/
Yac
Yac
http://www.yac.com/
ZeroPlus => via IP
Zeroplus.com
http://www.zeroplus.com/