Top 6 Assembly Osdev Projects

Cyjon

4 412 6.6 Assembly

A simple, clean code, multi-tasking kernel written in pure Assembly language for 64-bit processors from the AMD64 family.
64bit-os-tutorial

4 132 0.0 Assembly

This OS Tutorial expands on the fundamental concepts covered in cfenollosa/os-tutorial and covers entering long mode on the x86_64 architecture. It also uses clang rather than relying on an external crosscompiler. I plan on keeping it up to date, so feel free to submit an issue!
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
mintia

3 73 9.2 Assembly

Paging operating system for a custom computer architecture

Project mention: Mintia: my paging operating system written in a custom language for a custom architecture | /r/osdev | 2023-07-08

MINTIA is the flagship operating system for XR/station, and has itself been in the works for 2.5 years and counting. To meet some standard of "realism" for a late 80s workstation operating system, it has the following goals (in no particular order):

x86-bootloader

1 24 0.0 Assembly

A BIOS bootloader for bare-metal x86 programs, written in 8086 assembly
x86-kernel

0 10 0.0 Assembly

A hobby kernel developed from scratch using i8086 assembly
FlameOS-Rewrite3

1 2 6.7 Assembly

A simple 32-bit OS.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).