Pseudonymization Python Packages

argus-redact

Encrypt PII, not meaning. Locally.

maskops

High-speed PII masking as a Polars plugin — powered by Rust

carnaval

Reversible PII anonymization for LLM pipelines: mask names, emails and bank details before text reaches a cloud LLM, then restore them in the response. Local-first, encrypted vault, 6 languages. Python, Apache-2.0.

libpep-py

Library for polymorphic pseudonymization and encryption

vault-engine

Identity de-identification for cloud-LLM hand-off: local detection, consistent pseudonyms, a reversible local map, and a swappable model backend.

noirdoc

German-first PII redaction and pseudonymization for documents. Local by default. Reversible when you need it.

mailcom

Recognize and pseudonymize named entities in emails