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freeCodeCamp – Scale Your Team’s Skills with a 456k+ Star Curriculum

Name: freeCodeCamp – Scale Your Team’s Skills with a 456k+ Star Curriculum
Author: freeCodeCamp

Leverage freeCodeCamp’s open-source, TypeScript‑based curriculum to upskill engineers in math, JavaScript, and CS fundamentals—ideal for founders building tech teams on a budget.

456,626 stars+1,202★ this week47,897 forksTypeScriptGuide quality 8/10 · reviewed Sep 29Updated 10/2/2026100% free · open source

What it does

FreeCodeCamp provides a platform for startup founders and beginners to learn programming skills through interactive coding challenges and projects.

When to use it

•You need to learn programming fundamentals to better understand your development team's work
•You want to hire developers but don't know how to assess their skills
•You're building a MVP and need to prototype or test coding ideas quickly

Ready-to-paste prompt

Complete the 'Palindromes' challenge in the 'Basic Algorithm Scripting' section with the following code: `function palindrome(str) { ... }`

Heads up: Make sure you have Node.js version 16 or higher installed on your system, as freeCodeCamp requires it to run

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/freecodecamp && curl -fsSL https://workflowstacks.com/api/skills/freecodecamp/claude-skill -o ~/.claude/skills/freecodecamp/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How freeCodeCamp – Scale Your Team’s Skills with a 456k+ Star Curriculum works

Codeflow

Free to inspect

FreeCodeCamp – Scale Your Team’s Skills with a 456k+ Star Curriculum is a very large TypeScript project (~159k lines across 1180 code files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, BSD-3-Clause license, has a test suite.

Size

Very large codebase

~159k lines · 1180 code files · days to read — use, don't read

Setup

Developer setup

A real software project. Use it via its install path; don't expect to read it all.

Runs on

Node.js · Docker

No API keys detected

TypeScript 62%JavaScript 34%CSS 4%

What happens, step by step

Learn coding for free

You give

User data

1Join Community

README.md

2Choose Course

Select certification

3Complete Lessons

Interactive coding

4Get Certified

Pass the exam

5Report Issues

Follow guidelines

README.md

You get

Coding skills

Where to start reading

1
README.md
Start here — what it does and how to install it
2
package.json
Dependencies and the commands it exposes

What's in each folder

curriculum/Folder17881 files

client/Frontend / UI813 files

tools/Helper scripts272 files

api/Backend / API210 files

e2e/Tests — proof it works113 files

packages/Sub-packages / plugins62 files

.github/CI / automation (GitHub Actions)38 files

docker/Deployment / infrastructure5 files

READMEHas testsDocumentedCI checksDocker readyBSD-3-Clause licenseUpdated this month

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/freecodecamp && curl -fsSL https://workflowstacks.com/api/skills/freecodecamp/claude-skill -o ~/.claude/skills/freecodecamp/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

freeCodeCamp

Language

TypeScript