Edabit is described as 'When learning to code, most people get stuck on the "bridge" between memorizing syntax and understanding the logic that makes it all work. We believe the most effective way to learn a programming language is to break the process into three phases:' and is a popular Code Learning service in the education & reference category. There are more than 25 alternatives to Edabit, not only websites but also apps for a variety of platforms, including SaaS, Android, iPhone and iPad apps. The best Edabit alternative is freeCodeCamp, which is both free and Open Source. Other great sites and apps similar to Edabit are Codecademy, exercism, LeetCode and Codewars.
I like the free access to all courses