ToastOS

ToastOS is an open source custom operating system developed from scratch for the x86_64 PC platform. It was a very big challenge with a lot of learning, resulting in a semi functional OS. I’m quite proud of how far I’ve reached with this, as writing an OS from scratch is a huge challenge.

GitHub

Features

Scheduling
Usermode
tarfs ramdisk
Hosted toolchain
mlibc-based usermode libc
PS/2 keyboard and mouse
Can run Doom
Coreutils (ls, cat, etc)
SMP
Read-only EXT2 Filesystem
Runs on real hardware (somewhat)