Code.org includes free coding lessons and the initiative also targets schools in an attempt to encourage them to include more computer science classes in the curriculum. Developed by Code.org
License: Free
Code.org is designed to introduce a wide audience to programming through block-based coding, making it accessible for all ages. In contrast, Hackety Hack! focuses specifically on teaching Ruby programming in an interactive way, appealing to those wanting to delve deeper into a specific language.