The Plop boot managers
I wrote different boot managers. Three boot managers are available as download. The Plop Boot Manager 5, PlopKexec and the new boot manager PBM6. The new boot manager is under development.
Elmar Hanlhofer
I had never heard of the three Plop boot managers, written by Elmar Hanlhofer, but they seem like quite the capable tools. First, Plop Boot Manager 5 is the most complete version, but it's also quite outdated by now, with its last release stemming from 2013. That being said, it's incredibly feature-packed, but since it lacks UEFI support, its use case seems more focused on legacy systems. PBM6, meanwhile, is the modern version with UEFI support, but it's not complete and is under development, with regular releases. Finally, PlopKexec is exactly what the name implies - a boot manager that uses the Linux kernel.
I've never encountered these before, but they seem quite interesting, and if it wasn't for how much I do not like messing with bootloaders, I'd love to give these a go. Have any of you ever used it?