Otterkit – COBOL compiler for .NET
I'm the lead developer of Otterkit. We've been working on this compiler for the past few months. The goal is to support the latest COBOL 2022 standard and compile it to C# (will support nativeAOT as well) Currently most of the work is being done on the parsing side of it to ensure that it can correctly parse all of the 2022 standard. We're almost done writing the parser, and will soon move to the codegen and runtime library. Please let me know what your opinion is on the project. I'll be here to answer any questions about it. We're also looking for contributors if anyone is interested in…
Otterkit – COBOL compiler for .NET launched on January 17, 2023 with 192 votes, #168 of 3,901 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Otterkit is a COBOL compiler for .NET that converts COBOL 2022 standard code to C#, with planned support for nativeAOT compilation. Built for developers maintaining or modernizing legacy COBOL systems, it targets compatibility with the latest COBOL specification. The project is currently focused on completing its parser to handle the full 2022 standard before moving to code generation and runtime library development. The team is actively seeking contributors to help bring the compiler to production readiness.
written from the facts on this page · September 2026
From the sources
Contribute to otterkit/otterkit development by creating an account on GitHub.
In the maker’s words, at launch
I'm the lead developer of Otterkit. We've been working on this compiler for the past few months. The goal is to support the latest COBOL 2022 standard and compile it to C# (will support nativeAOT as well) Currently most of the work is being done on the parsing side of it to ensure that it can correctly parse all of…
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