Krita is a free and open source cross-platform application that offers an end-to-end solution for creating digital art files from scratch built on the KDE and Qt frameworks.

Self-hosting metacompiled Forth, bootstrapping from a few lines of C; targets Linux, Windows, ARM, RISC-V, 68000, PDP-11, asm.js.

A UEFI bootloader for bare-metal x86-64 applications

CS 61 problem sets for 2020

Chickadee OS for Harvard CS 161

Tensors and Dynamic neural networks in Python with strong GPU acceleration

⚡ Competitive Programming Library

The guide to online assessments and interviews

A course to build distributed key-value service based on TiKV model

Collection of Summer 2025 tech internships!

Darwin/macOS emulation layer for Linux

List of Research Internships for Undergraduate Students

Build your own layer-2 virtual switch in less than 300 lines of code

Source code to pbrt, the ray tracer described in the forthcoming 4th edition of the "Physically Based Rendering: From Theory to Implementation" book.

A hobby operating system built mostly from scratch.

A Compiler Writing Journey

web search done right

Machine Learning Engineering Open Book

List of conventional commit types with emoji 🎉

The open-source tool for building high-quality datasets and computer vision models

A tiny hand crafted CPU emulator, C compiler, and Operating System

simple terminal UI for git commands

fugitive.vim: A Git wrapper so awesome, it should be illegal

An ultra-simplified explanation to design patterns

⭐ Pretty-print `git` repository collaborators sorted by contributions

A curated list of engineering blogs

✨ Programming Language Research, Applied PLT & Compilers

Distributed SQL database in Rust, written as an educational project

The library for web and native user interfaces.

From the Transistor to the Web Browser, a rough outline for a 12 week course