Practice Vibe Coding on Real Open-Source Projects

Start here

• Projects to practice on585 open-source projects, newest first. Pick one, open its issues, and work through them with your AI coding agent.
• AI tools to practice with34 tools and websites for AI-assisted coding and job preparation. Each page explains what it is, why it helps and who it is for.

New finds

The most recent additions to the collection.

• Projectcsapp-zh-markdownChinese-language CSAPP third-edition study materials for reading chapters, checking exercise answers, and studying eight labs online or offline.
• ProjectkernelBlueOS Kernel is a Rust operating system kernel with POSIX interface compatibility and Rust standard library support. It provides a foundation for kernel development on ARM and RISC-V architectures, including QEMU platforms.
• ProjecthowtogetalongA practical guide for university students and early-career readers handling communication and social situations, with scenario-based advice they can adapt to everyday interactions.
• Projectlinux-basics-for-hackers-notesA structured Linux study course based on Linux Basics for Hackers, with notes, command examples, diagrams, and exercises for learning in a personal lab.
• ToolArchive.todayA web archiving service that takes a snapshot of a page you submit and stores both a text copy and an image copy. Each snapshot gets a short link that stays online.
• ToolScreenshot GuruAn online tool that captures a screenshot of any public web page as a high-resolution PNG. It handles long pages that extend below the fold, and it also works for tweets.
• ToolJust the RecipeA tool that takes a recipe page and shows only the ingredients and instructions. It removes the life story, popups and other clutter that surround recipes on many sites.
• ToolFutureMeA site where you write a letter, pick a delivery date and have it emailed to you later. It also offers public letters to read and prompts if you need ideas.
• LinkThe Simple Idea Behind Physics’ Most Terrifying EquationA short explainer on the idea behind one of physics' most feared equations.
• LinkWhy Kalman Filters Work So WellBest explanation of Kalman Filters

Categories

How to practice

1. 1

   Pick a project

   Choose one from the list that matches the job you want. Smaller, active projects are the easiest to start on.

2. 2

   Read the issues

   Open the upstream issue tracker and pick a small issue you can reproduce.

3. 3

   Fix it with AI

   Use an AI coding agent to understand the code, reproduce the bug and draft a fix. You review every line.

4. 4

   Ship it

   Open a pull request upstream, or keep the fix in your fork as part of your portfolio.

5. 5

   Write it up

   Explain the bug, the fix and what the AI got wrong. That story is your interview answer.

Latest write-ups

• How to use Claude Code with Serena and ccusage in 3 minutes · August 20, 2025
• The Rarely Known Fact: Using Google Service Account for M2M JWT Authentication and Authorization · March 20, 2025
• How to Judge if a Time Series Is a Martingale? Using the Black–Scholes Model as an Explanation · February 23, 2025
• A Beginner's Guide to Diffusion model · February 15, 2025

All posts