Three first-class languages
Reference implementation in Java, with feature-parity ports for Python and Go. Pick the SDK that fits the stack you already have.
Open source redaction library
Phileas
Phileas is the core redaction, anonymization, masking, and replacement library that powers Philter. Embed it directly into your Java, Python, or Go application when you want fine-grained control over the redaction pipeline — without standing up another service.
Why Phileas
Policy-driven
JSON policies describe which entity types to detect, under what conditions, and how to handle each — redact, mask, encrypt, replace with a synthetic value, or pass through. Version-control your policies; deploy them through CI/CD.
Format-preserving
Encrypt SSNs so they still look like SSNs. Hash phone numbers so the format stays valid for downstream systems. Keep the data useful without exposing the identifiers.
Embeddable
Link Phileas directly into your application — no service to deploy, no network hop, no operational footprint. Redaction happens in-process on the data already in memory.
Battle-tested
Phileas is the engine underneath Philter, running in production at healthcare, legal, and financial customers. The library has been pressure-tested on the workloads where a privacy miss isn't an option.
Apache 2.0
Permissive licensing. No commercial review needed, no per-seat fees, no vendor lock-in. Use it however you need to.
Ready to use Phileas?
Three ways to get going — deploy the open source yourself, spin it up from a cloud marketplace, or work with our team directly. Pick the path that fits.