Quibble is described as 'The custom Windows bootloader - an open-source reimplementation of the files bootmgfw.efi and winload.efi, able to boot versions of Windows from XP to Windows 10 22H2. Unlike the official bootloader, it is extensible, allowing you to boot from other filesystems than' and is a Boot Manager in the os & utilities category. There are four alternatives to Quibble for a variety of platforms, including Linux, Mac, Windows, BSD and Oracle Solaris apps. The best Quibble alternative is GNU GRUB, which is both free and Open Source. Other great apps like Quibble are Limine, burg and Yaboot.