BurnBox is described as 'Zero-knowledge encrypted file transfer that destroys files after download, no accounts, no logs & encrypted in your browser' and is an website in the file sharing category. There are more than 50 alternatives to BurnBox, not only websites but also apps for a variety of platforms, including Windows, iPhone, Android and Mac apps. The best BurnBox alternative is Blip. It's not free, so if you're looking for a free alternative, you could try Blip or Transfer.it. Other great sites and apps similar to BurnBox are pCloud, Hoodik, Wormhole and WeTransfer.