Project Summary
Koopa is a Cobol parser (generator). 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.
Features:
* Cobol lexer and parser (generator)
* Accepts free and fixed format Cobol
* Covered by a Cobol 85 testsuite, and grammar unit testing
* Cobol viewer with syntax highlighting, outline, quick navigation and XPath-based querying
* XML dumps of parse trees
* Experimental, work in progress: Cobol preprocessor (copy book expansion only)
In a Nutshell, Koopa Cobol Parser...
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has a well established, mature codebase
maintained by a average size development team
with increasing Y-O-Y commits -
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took an estimated 13 years of effort (COCOMO model)
starting with its first commit in August, 2009
ending with its most recent commit about 2 months ago
Quick Reference
BSD 4-clause (University of California-Specific)
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryAug 15 2026 — Sep 14 2026
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12 Month SummarySep 14 2025 — Sep 14 2026
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