CodeHS is described as 'Teaching computer science to high school by providing web-based curriculum, teacher tools and resources, and professional development' and is a Code Learning service in the development category. There are more than 50 alternatives to CodeHS, not only websites but also apps for a variety of platforms, including Android, Windows, iPhone and iPad apps. The best CodeHS alternative is freeCodeCamp, which is both free and Open Source. Other great sites and apps similar to CodeHS are Codecademy, Scratch, W3Schools and tutorialspoint.