Thimble by Mozilla is described as 'Webmaker - teach your self to code for the web' and is a Code Editor in the Development category. There are more than 10 alternatives to Thimble by Mozilla, not only websites but also apps for a variety of platforms, including Mac, Linux, Self-Hosted solutions and Windows. The best alternative is CodePen, which is free. Other great sites and apps similar to Thimble by Mozilla are jsFiddle (Free), Replit (Freemium), JS Bin (Freemium, Open Source) and Glitch (Free).
CodePen is a social development environment for front-end designers and developers. 👋 It’s the best place to build and deploy a website, show off your work, build test cases, and find inspiration. We call them Pens.
Replit is a complete, collaborative cloud development environment in the browser featuring everything from linters and debuggers to third-party packages, hosting and deployment. FEATURES - Real-time collaborative code editing. - Live chat in the workspace.
Compile and Execute your favorite programming languages online, click any of the following to proceed! Web Technologies, Text Formatting, Useful Utilities, Programming Languages. Vim, emacs modes are avaliable.