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Build Real Projects. Master Real Skills.

Interactive, bite-sized labs with instant feedback — designed for web developers who want practical experience, portfolio pieces, and fast progression.

Hero & Intro

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Build Real Projects. Master Real Skills.

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Interactive, bite-sized labs with instant feedback — designed for web developers who want practical experience, portfolio-ready projects, and fast progression.

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\n Get Started — Free\n How it Works\n
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  • Hands-on labs with live validation
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  • Micro-projects optimized for portfolios
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  • Instant feedback and hints
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Live Editor & Auto-Grader
\n Run tests in the browser and get guided fixes\n
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Code editor preview
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Try a lab in under a minute — no setup required.

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Core Features

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What Codelube Gives You

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A modern learning flow built around doing, shipping, and improving.

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Configurable Labs
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Tailor each lab with custom tests, starter code, and progressive hints for any curriculum.

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Instant Feedback
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Automated tests and inline hints help learners iterate faster and learn from mistakes.

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Project-Based Learning
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Complete micro-projects that teach modern tooling and produce portfolio-ready results.

\n Browse labs\n
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How It Works

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How Codelube Works

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Three simple steps to start building and learning.

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1. Pick a Lab
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Choose from curated micro-projects grouped by skill and time commitment.

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2. Code in the Browser
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No local setup. Use the in-browser editor with live tests and helpful hints.

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3. Ship & Share
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Complete projects, get a shareable preview and automated grading, and add to your portfolio.

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\n Browse Labs\n
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Labs Gallery

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Sample Labs

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Try bite-sized labs across HTML, CSS, JS, React, Node, and testing.

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Beginner
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25m
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Responsive Landing Page
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Build a responsive landing page using Bootstrap utilities and flexbox.

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\n Try lab\n Preview\n
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Intermediate
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50m
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React To-Do with Tests
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Create a testable React component and write unit tests to validate behavior.

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\n Try lab\n See tests\n
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Advanced
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2h
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Node API & Auth
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Implement a REST API with authentication and write integration tests.

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\n Try lab\n Repo\n
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\n Browse all labs\n
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Pricing

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Simple Pricing for Teams and Individuals

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Free tier to explore, and pro plans for teams and instructors.

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Starter
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Free

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Access to public labs, community feedback, and basic editor tools.

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  • Unlimited public labs
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  • Live editor
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  • Community support
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\n Create account\n
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Pro
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$12/mo

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Private labs, advanced hints, and priority grading for serious learners.

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  • Private labs
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  • Advanced hint system
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  • Priority grading
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\n Upgrade to Pro\n
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Teams
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Custom

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Classroom management, LMS integration, and bulk licensing for bootcamps and companies.

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  • Instructor controls
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  • LMS & SSO integration
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  • Bulk seats & billing
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\n Contact sales\n
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Testimonials

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Trusted by learners and instructors

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Real outcomes from real people using Codelube.

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\"Codelube helped our cohort build confidence quickly — the instant feedback loop is a game changer.\"

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\n Jordan D.
Bootcamp Instructor\n
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\"I finished three portfolio projects in a month. The lab tests guided me to write cleaner code.\"

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\n Amy M.
Frontend Developer\n
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\"Our engineering team uses Codelube to run shared labs during onboarding — speeds up ramp time.\"

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\n Ravi K.
Engineering Manager\n
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