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freeCodeCamp/devdocs

This system is a Ruby/Sinatra-based documentation browser that aggregates and serves API references for a wide variety of programming languages and frameworks. It manages the scraping, parsing, and storage of documentation sources, providing a unified interface for searching and viewing entries. The application features a modernized JavaScript frontend with offline support, dynamic theming, and comprehensive test coverage for its core logic.

61.5

Adequate · 29 July 2026

45k

lines of production code

Ruby

with JavaScript

2

bus factor · 285 authors in all

3

measurements over time

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How it got here

2013 · Initial project scaffolding and structure

This period established the foundational architecture of the application, introducing core libraries, configuration files, and a modular codebase structure. It also implemented essential features such as offline support, error pages, and a comprehensive test suite to ensure stability.

13 changes

2024 · JavaScript migration to ES6

The codebase underwent a comprehensive migration from CoffeeScript to modern ES6+ JavaScript across all components, including models, views, collections, and templates. This shift introduced class-based inheritance, arrow functions, and modern syntax to improve maintainability and align with current standards.

12 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 29 July 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit fe38cf91e0 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.
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