LegacyLens helps teams finally understand their mainframe code.
Our platform automatically analyzes, maps, and documents your COBOL, JCL, HLASM, and PL/I programs. In minutes, turn raw source code into interactive dependency maps and a complete inventory of your application estate.

In-depth analysis of COBOL, JCL, HLASM, and PL/I, including copybooks, nested call chains, and file definitions. Interactive dependency maps to visualize every relationship between programs, copybooks, and jobs. Complete resource inventory: files, datasets, programs, and their types across your entire application estate. GitHub integration for automatic re-indexing on every push. Complexity metrics, dead code detection, and modernization readiness scores.
No agents to install, no mainframe connectivity required. Drag and drop a ZIP of your source code or connect a GitHub repository.

LegacyLens is currently in early access.

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