Getting Started

Welcome to courselab.dev! Our platform lets you learn, practice, and master programming through thousands of hands-on, in-browser coding labs—completely free, with no hidden costs.

1. Sign Up

Create a free account in seconds to track your progress and earn certificates.

2. Choose a Path

Select from JavaScript, Python, Rust, and dozens of other modern languages.

3. Start Learning

Launch your first lab instantly. No installation or setup required.

Supported Programming Languages

Our platform supports a comprehensive range of programming languages to cater to various skill levels and use cases.

Dominant in 2026

JavaScript TypeScript Python Java C# C++ Go Rust PHP SQL

Emerging & Growth

Zig Gleam Elixir Julia Swift Kotlin Dart Mojo

Platform Overview

  • 70,000+ Labs: High-quality coding labs created by our community and curated experts.
  • In-Browser Execution: Write, run, and test code in a split-screen interface.
  • AI-Powered Learning: Multi-level hints, explanations, and tutor mode.
  • Advanced Environments: Cloud VMs via VPN and Docker instances for networking and security.

Lab Types & Environments

In-Browser Labs

Run directly in your browser using embedded interpreters.

JS, Python, TS

Docker-Based Labs

Disposable containers with pre-configured images.

Networking, Security

VM-Based Labs

Dedicated cloud virtual machines via secure VPN.

DevOps, Infrastructure
Why courselab.dev?

Zero setup, entirely browser-based, and truly free. Built by developers, for developers. Learn more about our philosophy →