The best alternatives to Edabit are Lrn, freeCodeCamp.org, and Enlight. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Join a community of millions of people who are learning new skills, building their portfolios, and getting developer jobs. We’re nonprofit. We’re open source. We’re living proof that tech education can be convenient, effective, and free.
Enlight is a resource aimed to teach anyone to code through building projects. Hosting a wide variety of tutorials and demos, Enlight provides developers with sample projects and explains how they work.
Programiz is a free e-learning platform that provides beginner-friendly tutorials for nine different programming languages. It has modular tutorials and collection of examples for each language. It also has online compiler to test the code while learning.