Local-first products
Problem
Your data shouldn't have to leave the machine to be useful. Most tools force a cloud round-trip for things that should work offline.
Outcome
Browser extensions and local applications with verifiable data boundaries — storage you can inspect, backups you control, no silent uploads.
Typical engagement
Product definition → data-boundary design → extension/app build → live validation on real pages → release evidence package.
Example: Review Scout — Amazon review analysis in extension-origin IndexedDB, no remote backend.