Codecademy

Codecademy specializes in teaching coding and computer science through an interactive, learn-by-doing platform. Users write code directly in the browser with instant feedback. Key offerings include structured Career and Skill Paths, projects, and portfolio-building exercises. It targets beginners and intermediate learners aiming to break into tech.

A basic tier is free, but Pro subscriptions unlock full paths, certificates, and real-world projects. It excels in its core mission: making coding accessible and engaging through its superior interactive environment, though it's less suited for deep theoretical computer science.