UEFI fdisk is a disk partitionning tool running under UEFI/BIOS
UEFI fdisk is a port to UEFI of the famous fdisk partitioning tool from util-linux, see https://github.com/karelzak/util-linux . Now since this program runs directly under UEFI shell you don't need to *boot* the system to edit partition tables.
This software boots your PC and analyse your filesystems. It displays a graphical menu for you to select which system to boot. Intended to replace LILO and Loadlin, written in C with GCC, fully real mode.
Extended Operating System Loader (XOSL) is a full-featured free boot manager with a real,
easy-to-use and full-blown graphical user interface.
XOSL-OW is an Open Watcom port of XOSL 1.1.5 (Dec 23, 2000) by Geurt Vos developed with Borland BC31.
This tool allows to boot linux-m68k from a floppy on a macintosh motorola 68K based. With it, you can create rescue disk, or remove the MacOS partition (needed by the legacy penguin booter) from your HD.
The FDOS Operaing System is 100% written in Assembler (NASM). It supports FAT 12, TSR and a small Multi Kernel System. The source is very good documentated (only in English). A German, russian and English Documentation (about 40 pages) are included.