Notes for Sandi Metz's OOD book: "Practical Object-Oriented Design in Ruby."

An agentic skills framework & software development methodology that works.

Learn how Copilot Spaces can scale institutional knowledge and streamline organizational processes.

Multi-harness agentic plugin marketplace for Claude Code, Codex CLI, Cursor, OpenCode, GitHub Copilot, and Gemini CLI

Chat with GitHub Copilot in Neovim

✨ AI Coding, Vim Style

☁️ Nextcloud server, a safe home for all your data

A collection of branches that transmit HTML over the wire.

[mirror] A sustainable architecture for Ruby on Rails.

A community-curated list of flexbox issues and cross-browser workarounds for them.

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

Legacy Code Retreat - Trivia Game codebase

🔬 A Ruby library for carefully refactoring critical paths.

Master the command line, in one page

DevOps Reading List

Frontend Workshop from HTML/CSS/JS to TypeScript/React/Redux

🔑 Community-driven Rails Security Checklist (see our GitHub Issues for the newest checks that aren't yet in the README)

Ruby Style Guide

A workbook repository of example test smells and what to do about them.

Mutation testing for Ruby. AI writes your code. AI writes your tests. But who tests the tests?

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

Code smell detector for Ruby

A guide for programming in style.

Flight rules for git

🗂 The essential checklist for modern web development, for humans and AI agents

This repository contains Hands on Test Driven Development Katas (C#)

A community-driven Ruby coding style guide

Boilerplates for mobile and web apps

Interactive algorithm visualizations