Evoiphone
- Callback service in Quebec and Ontario Canada.
- http://www.evoiphone.com

EUROtel
- South African based callback provider. Also is an internet service provider (ISP).
- http://www.eurotel.co.za

CallnPay
- Norwegian based callback concept for mobile and fixed lines.
- http://www.callnpay.no/world/

One4000 Telecom
- Callback initiated from the web or text message from a mobile phone.
- http://www.one4000.com/

Paradise Technologies
- South African based callback company, offering web triggered and traditional callback and VoIP.
- http://www.paradise-tech.com/

Passport Telecom Ltd
- UK based callback company.
- http://www.passport-telecom.com/

Eurocomm
- UK based callback company also offers UK dialaround.
- http://www.eurocomm.co.uk/

World Phone
- German callback provider offering internet triggered services.
- http://worldphone.de/

BestNetCall
- Web initiated callback service.
- http://www.bestnetcall.com

Enlinea Communications
- International callback telephone service offering internet call triggering.
- http://www.enlinea.com/

Yes-Tel
- International callback services from over 100 countries.
- http://www.yes-tel.com/

MiliTel
- Call back service using US carriers to route the calls.
- http://www.militel.net/

Kallback
- Discount provider of international call reorigination.
- http://www.kallback.com/

Callback World
- International callback service.
- http://www.callbackworld.com/

Eztel
- United States based callback service.
- http://www.eztel.com/