W3Schools is described as 'Web developers information website, with tutorials and references on web development languages such as HTML, CSS, JavaScript, PHP, SQL, and JQuery, covering most aspects of web programming' and is a very popular Code Learning service in the development category. There are more than 50 alternatives to W3Schools, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Self-Hosted apps. The best W3Schools alternative is freeCodeCamp, which is both free and Open Source. Other great sites and apps similar to W3Schools are exercism, SoloLearn, tutorialspoint and MDN Web Docs.