Codewars presents small coding challenges called kata, ranked by difficulty. You solve them in your chosen language, submit, and then see how other people solved the same problem. Some solutions are elegant, some are clever, and some are unreadable — but seeing the range is educational. The platform supports over 50 languages and tracks your progress with ranks and honor points.

Unlike interview-focused platforms, Codewars emphasizes problem-solving variety and code golf-style creativity. It is not a structured curriculum, so it works best as a supplement for developers who want to keep their skills sharp or explore how different languages approach the same problem. The community discussion under each kata is often as interesting as the challenge itself.