"Great job! Very pleasure cooperate with you!"

"Thank You. Rövid idő alatt megérkezett. "

"Upgraded win10 home with win10 pro key"

"Bought Win10 Home key, it was delivered very fast (within few minutes), and the key worked as promised. Thanks. "

"Maximálne spokojný. Do 2min som mal kľuč. Cely proces aj z platbou netrval ani 10min. "

"All is good a work. (Win 10Pro)"

"I bought a Win 10 license, just to find out how fast Keyworlds will react. It took les than 5 Minutes for receiving the activation key. Meanwhile the new Win 10 is running and activation of the system was easy. No single Problem. Will buy again from Keyworlds, it is a reliable source. "

"they refunded my wrong order without troubles and was very helpfull in correcting my order. many thx to Lin (Customer Service) for his uncomplicated and efficent help"

"I am satisfied with the service that I have received, probably I would emphasize more on the delivery of the product at some point I expected to receive a package with the key."

"I'd bought just one licence. Perfect service. Relatively fast licence delivery. It took a little bit more than few minutes."

"One of the keys already used, worked perfectly. The other ones will be needed soon. Perfect service thanks."

"Super choix, ultra rapide pour la "livraison",installation, le tout en 10 minutes. SUPER"

"Foi a melhor forma que encontrei para ter software a preços acessíveis. "

"quick service and working licenses for a good price - thank you"

"Your service is excellent . Thank you very much for your instant answers. "