Parser Designer

This is a simple web IDE for building parsers. You write Parsers in the textarea on the left. You can then use your parsers in the textarea on the right. You instantly get syntax highlighting, autocomplete, atom checking, suggested corrections, and more.

Sometimes we call a group of parsers a "microlang". Click "Newlang" to create a new microlang, or explore/edit existing microlangs. In dev tools, you can access the parsed particles below as "app.parsersProgram" and program at "app.program". We also have a work-in-progress tutorial for creating Parsers.