Prettier : Prettier is an opinionated code formatter. It enforces a consistent style by parsing your code and re-printing it with its own rules that take the max...
JavaScript Code Style checker : jscs is a code style checker. jscs can check cases, which are not implemented in jshint, but it does not duplicate jshint functionality, so you should...
Denigma : Denigma explains code in conversational English.
Powered by machine learning.
JSHint : This is JSHint, a tool that helps to detect errors and potential problems in your JavaScript code.
stylefmt : stylefmt is a tool that automatically formats your stylesheets.
Beautify, unpack or deobfuscate JavaScript and HTML, make JSON/JSONP readable, etc.