GRUB - Multiboot boot loader
PLoP Boot Manager - The PLoP Boot Manager is a small program to boot different operating systems.
Clover EFI bootloader - This is EFI-based bootloader for BIOS-based computers created as a replacement to EDK2/Duet...
Boot Repair Disk - A simple tool to recover access to your Operating Systems. * Easy-to-use (repair in 1 click ! )
U-Boot - Das U-Boot (the Universal Bootloader) and Embedded Linux
BootIt Bare Metal - BootIt Bare Metal is a boot manager and partition manager software utility.