Rustlings
by Rust Project
Small exercises to get you used to reading and writing Rust code.
Redox OS
by Redox OS Team
A Unix-like operating system written in Rust, from scratch.
Related resources
rCore Tutorial Book
by Tsinghua University
Learn to write an OS kernel in Rust — a popular university course material.
Bevy Engine
by Bevy Contributors
Data-driven game engine built in Rust — great for learning ECS and graphics.