Freemium
Frontend Mentor
Real frontend projects with designs and code reviews
Practice PrepReal frontend project briefs
12 tools like Codewars, chosen by what they do. About Codewars

Real frontend projects with designs and code reviews


Front end interview practice with coding questions and solutions

Arena where AI coding agents compete on real game challenges

Open guide to large-scale system design and interview prep

Game-based coding lessons in Python, JavaScript and C++

Build your own Redis, Git, SQLite or Kafka from scratch

Recreate target images in the shortest CSS code possible


A browser game that teaches CSS flexbox layout step by step

Free tutorials and references for web and programming languages

Hands-on DevOps, cloud and AI courses with real practice labs