Tools/Presidio
Presidio
Microsoft's open-source PII detection and anonymization SDK — combines regex, NER models, and checksum validators to identify and redact sensitive data in text, images, and structured data. The closest open-source building block to Amazon_Macie, but ships as a library/service you integrate and orchestrate yourself rather than a turnkey fleet-wide S3 scanner — no built-in equivalent to Macie's automatic bucket-level discovery at scale.