Stars
A completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and userspace including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network…
Projects for an undergraduate OS course
A native, user-mode, multi-process, graphical debugger.
Code from various chapters in OSTEP (http://www.ostep.org)
A shader-based software renderer written from scratch in C89
ZSWatch - the Open Source Zephyr™ based Smartwatch, including both HW and FW.
vnStat - a network traffic monitor for Linux and BSD
Year 11 Physics, Applied. A collection of interactive demonstrations and physics simulations.