Software Metrics Machine (SMM) is an open-source, local-first command-line tool and dashboard (https://www.npmjs.com/package/@smmachine/launcher) that collects, stores, and visualizes engineering metrics from the systems a development team already uses — git history, CI/CD runs, pull requests, issue trackers, and code-quality gates. It runs entirely on the user's machine: no data leaves the local environment, no account is required, and no telemetry is collected.