Comby : Comby is a tool for matching and rewriting code.
Denigma : Denigma explains code in conversational English.
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Babel : Babel will turn your ES6+ code into ES5 friendly code, so you can start using it right now without waiting for browser support.
Lens : Lens is an IDE to take control of your Kubernetes clusters.
repl.it : Powerful and simple online compiler, IDE, interpreter, and REPL. Code, compile, and run code in 30+ programming languages. including JavaScript, Pytho...
Insight.io brings IDE-like code intelligence features such as cross-reference, class hierarchy and semantic search, right into your browser and helps developers to work with more productivity.