S2JS is described as 'answers the question of where to go after Scratch' and is an website in the Development category. There are more than 10 alternatives to S2JS, not only websites but also apps for a variety of platforms, including Mac, Windows, Linux and Android. The best alternative is Codecademy, which is free. Other great sites and apps similar to S2JS are Scratch (Free, Open Source), Grasshopper (Free), SitePoint (Freemium) and Enlight - Learn to Code (Free, Open Source).
Interactive platform for learning C# where you learn coding by reading an adventure story about fighting machines in the future. While reading you gonna meet challenges that require real coding to solve.
Snap! (formerly BYOB) is a visual, drag-and-drop programming language. It is an extended reimplementation of Scratch (a project of the Lifelong Kindergarten Group at the MIT Media Lab) that allows you to Build Your Own Blocks.