BestNetCall: Web initiated callback service.
Callback World: International callback service.
CallnPay: Norwegian based callback concept for mobile and fixed lines.
CallPhonix: Prepaid international callback service. Web and SMS triggers.
Enlinea Communications: International callback telephone service offering internet call triggering.
Eurocomm: UK based callback company also offers UK dialaround.
EUROtel: South African based callback provider. Also is an internet service provider (ISP).
EZCalls Inc.: Canadian based international callback service with web initiated calls.
Eztel: United States based callback service.
Kallback: Discount provider of international call reorigination.
Majosa Communications: Wholesale callback and VoIP services.
MiliTel: Call back service using US carriers to route the calls.
One4000 Telecom: Callback initiated from the web or text message from a mobile phone.
Paradise Technologies: South African based callback company, offering web triggered and traditional callback and VoIP.
Passport Telecom Ltd: UK based callback company.
Transunitel: Salem, Oregon based callback provider.
World Phone: German callback provider offering internet triggered services.
Yes-Tel: International callback services from over 100 countries.