Modernize COBOL without betting the business.
MakeDirectory helps banks, insurers, and government teams understand and modernize their mainframe COBOL — starting with open tools that run entirely inside your network.
Discovery, assessment, and a modernization path
Estate discovery
Inventory programs, copybooks, calls, and dependencies. See what you actually have before you plan a migration.
Assessment & effort
Complexity, coupling, and migration-effort scoring per program — so prioritization is grounded, not guessed.
Delivery
Integration patterns (COBOL behind modern APIs), incremental modernization, and hands-on delivery support.
Tools that earn trust before they ask for it
Our open-source tooling is real, runnable, and permissively licensed — proof of how we work, and a low-risk way to start inside your firewall.
COBOL Migration Toolkit
Scan a COBOL estate → inventory, dependency graphs, metrics, and reports. Runs locally, no telemetry.
Learn more →Cartograph
Assessment-grade analyzers — complexity, effort, and more — that plug into the free toolkit.
See Cartograph →REST bridge & COBOL→Rust
Expose COBOL through a modern API, and an experimental COBOL-to-Rust transpiler.
Browse the demos →Have a COBOL estate you need to understand?
We'd love to help — and we're actively looking for design-partner feedback.