Millrace

Millrace turns folders of scans into searchable PDFs — thousands of them, overnight, entirely on your Mac.

100% ON-DEVICE
Nothing ever leaves your Mac. No upload, no account, no tracking, no cloud — there is no server. It's the on-device choice for confidential client files you legally can't send to the cloud.

BUILT FOR THE BACKLOG
Drop a folder of thousands of scans and close the lid. Millrace works through the night and is done by morning. Pause, resume, or lose power mid-run — it picks up exactly where it stopped and never reprocesses what's done.

SMART REDACT
Auto-detect names, emails, phone numbers and IBANs, then truly burn them out — not a black rectangle you can copy underneath. 100% on-device.

PRO TOOLS, ALL ON-DEVICE
• Verify digital signatures across a whole batch, with a SHA-256 audit trail
• Bates numbering and CONFIDENTIAL / COPY stamps in a single pass
• Auto-organize the output by document type
• Factur-X e-invoice XML, embedded for the French e-invoicing mandate
• Watch folders — point Millrace at a folder once, and everything dropped in is processed automatically
• Compression presets with a before/after preview

PAY ONCE
$49.99, one time. No subscription, no in-app purchases — everything Millrace does today, yours forever.

Apple Silicon native. Requires macOS 14 or later.