freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

Python SQL Parser and Transpiler

The open curriculum for learning web development

Ruby on Rails

📝 Algorithms and data structures implemented in JavaScript with explanations and links to further readings

FULL Augment Code, Claude Code, Cluely, CodeBuddy, Comet, Cursor, Devin AI, Junie, Kiro, Leap.new, Lovable, Manus Agent Tools, NotionAI, Orchids.app, Perplexity, Poke, Qoder, Replit, Same.dev, Trae…

Accessibility engine for automated Web UI testing

A list of awesome beginners-friendly projects.

A list of developer portfolios for your inspiration

Tracking ECMAScript Proposals

A Ruby static code analyzer and formatter, based on the community Ruby style guide.

24 Lessons, 12 Weeks, Get Started as a Web Developer

A curated list of engineering blogs of startup and enterprise companies

JavaScript image gallery for mobile and desktop, modular, framework independent

📚 Freely available programming books

The Concise TypeScript Book: A Concise Guide to Effective Development in TypeScript. Free and Open Source.

A collective list of free APIs

Pa11y is your automated accessibility testing pal

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

The Uber Go Style Guide.

List of Computer Science courses with video lectures.

Site Reliability Engineer Interview Preparation Guide

Curated list of resources on testing distributed systems

A list of helpful front-end related questions you can use to interview potential candidates, test yourself or completely ignore.

A tiny list limited to the best JavaScript Learning Resources

Sequel: The Database Toolkit for Ruby

Compiled list of links from "Ask HN: Where can I post my startup to get beta users?"

Accessibility Insights for Web

Awesome Books

a smol tcp/ip stack