There are 5 repositories under freedos topic.
FreeDOS kernel - implements the core MS-DOS/PC-DOS (R) compatible operating system. It is derived from Pat Villani's DOS-C kernel and released under the GPL v2. Please see http://www.freedos.org/ for more details about the FreeDOS (TM) Project. !!! This fork is no longer the primary fork -- Please post PRs and issues to https://github.com/FDOS/kernel !!!
A first person dungeon-crawler for DOS, written in C++, using software rendering and fixed point math
Run a Virtual Machine in your browser and boot Alpine 3.20 or FreeDOS 1.2
Text User Interface Shell for FreeDOS
Small Linux commands for resource limited systems
List of opensource cheat sheets
FreeDOS bootable floppy diskette and boot sector image files, and related tools.
Lightweight operating system based on FreeDOS
The Reliable USB Formatting Utility - Legacy OS Builds.
ReSizeable RAMDisk for FreeDOS (and other DOS). SRDISK is fast and able to use over 32M of XMS and EMS memory. The size of disk can be changed without rebooting or loss of content. Diskcopy compatible. This is authors copy from https://sourceforge.net/p/srdisk/. Fork if you like, but I do not use or develop this anymore.
hashpling allows you to use shebang on non-UNIX platform
FreeGEM/XM - FreeGEM desktop for DOS with multitasking