Apps similar to exercism include freeCodeCamp, which is free and open source. Other options are Codecademy, SoloLearn, W3Schools and LeetCode. Code Learning Services like exercism are a crowded field, with more than 50 alternatives for the web, iPhone, Android, Mac and iPad.
CyberStars teaches programming through short interactive lessons you work on directly in the browser: read the lesson, run the examples, write your own code and press Run Tests. Nothing to install.
Romania
EU
People frequently come to us asking for help with technical coding interviews. Many of us solve algorithmic coding puzzles for fun, and we’ve noticed a few things that make the process easier.
You can't direct what you don't understand. fata builds the full-stack fundamentals to lead a coding agent through frontend, backend, and the technical design that holds up in production.
Canada
Master PowerShell through hands-on, flag-based challenges in a real browser terminal. No setup, no install.
Coding practice app for iPhone, iPad, and Mac. Write real code, run it on the device, check it against the expected output.
United States
kodwai is a platform where developers solve real coding challenges on their own machine with their own AI coding agent (Claude Code, Cursor, or Codex) and get scored on how well they direct the agent, across three axes: Direction, Outcome, and Lift.
Türkiye
