GRUB - Multiboot boot loader
CloudFlare - Cloudflare is a global network designed to make everything you connect to the Internet secure, private, fast, and reliable.
Clover EFI bootloader - This is EFI-based bootloader for BIOS-based computers created as a replacement to EDK2/Duet...
Amazon CloudFront - Amazon CloudFront is a content delivery web service.
U-Boot - Das U-Boot (the Universal Bootloader) and Embedded Linux
KeyCDN - KeyCDN is a high-performance Content Delivery Network (CDN). Lowest price globally at $0.04/GB with HTTP/2 Support and free Origin Shield.