Koopa is a parser generator, made for Cobol. It can handle source files in isolation (no preprocessing required) and doesn't mind the presence of CICS/SQL fragments. The grammar is easily extensible in a way which minimizes the impact on the overall code.


  • Parser generator
  • Cobol lexer and grammar which accepts fixed, free and variable format code
  • Basic parsers for embedded CICS and SQL
  • Basic Cobol preprocessor
  • Covered by a Cobol 85 testsuite, and grammar unit testing
  • Cobol code viewer with syntax highlighting, outline, quick navigation and XPath-based querying
  • XML dumps of parse trees

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BSD License

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User Reviews

  • Excellent tool for extracting syntax tree out of COBOL code.

  • Extendable parser with the needed essential features and responsive developers

  • Koopa is very usefull

  • koopa is fast and stable

  • This parser is very good, with really interesting features, such as XML generation. Very good and stable project!

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Additional Project Details

Intended Audience

Information Technology, Developers

User Interface

Java Swing

Programming Language