TisaneAPI - Detect hate speech, cyberbullying, and more in 27 languages
Typescript - TypeScript allows developers to compile a superset of JavaScript to plain JavaScript on any browser, host, or operating system.
YouTube Kids - YouTube for the youngins on iOS and Android
LiveScript - LiveScript is a language which compiles down to JavaScript.
Kidslox - Set boundaries for your kids
Kaffeine JS - Kaffeine is a set of extensions to the Javascript syntax that attempt to make it nicer to use.