A book that explore how to write an Operating System from scratch

Hobby monolithic x86-32 Unix-like operating system from scratch

Eciton - modular microkernel/exokernel research prototype written in Rust.

MoeOS is a teaching-oriented hobby operating system project built from scratch in C++, aimed at deeply understanding the core principles of operating systems and putting them into practice one by one.

an OS template on which to build

Short, specific examples of OSDev concepts for x86

Neutrix is a small educational x86_64 operating system kernel written in Rust. It follows a bare-metal, no_std, no_main design and provides a compact foundation for experimenting with low-level OS concepts: paging, memory allocation, interrupt handling, device drivers, and a small async executor.