Web Directory

Exercism Learning Free, open-source platform to practice coding across dozens of languages with optional mentorship. Nonprofit Login Required Mobile Limited W3Schools Learning Beginner-friendly web development tutorials with an in-browser code editor. Company Login Not required Mobile Supported LeetCode Development The go-to site for coding-interview practice Company Login Optional Mobile Supported Codewars Learning Practice coding by solving ranked challenges called kata. Company Login Required Mobile Limited Khan Academy Learning Free lessons from math to science Nonprofit Login Optional Mobile Supported Frontend Mentor Learning Practice front-end skills by building real projects from professional designs. Company Login Optional Mobile Supported HackerRank Learning A practice platform for coding challenges, skill certifications, and interview prep. Company Login Required Mobile Supported Quizlet Learning A flashcard and study tool for memorising terms, definitions, and facts. Company Login Optional Mobile App recommended Project Euler Learning A long-running archive of mathematical problems meant to be solved with code. Nonprofit Login Optional Mobile Supported DataCamp Learning An interactive learning platform focused on data skills, where lessons are completed by writing code in the browser. Company Login Required Mobile Supported Sololearn Learning Bite-sized interactive coding lessons with an in-app code editor and community. Company Login Required Mobile App recommended