We believe redaction engines should be transparent and self-hosted. Explore our ecosystem of open-source tools designed to find, mask, and secure sensitive data in any environment.
Our own open-source software reflects our commitment to transparency and innovation. While we primarily use our own tools to solve data privacy challenges, we will leverage third-party open-source technologies like Apache NiFi and Apache Kafka when needed. We use our open source software as part of our Consulting Services.
Redact the PII in my system.
Philter is a turnkey, self-hosted PII redaction solution. Philter builds on Phileas to provide an API layer that lets Philter's redaction capabilities be integrated into virtually any sysatem. In addition to being open source, Philter is available in the AWS, Google Cloud, and Microsoft Azure marketplaces. Learn more about Philter or launch it in your private cloud today.
Create redaction policies using a visual interface.
The Philterd Redaction Policy Editor is a web-based management console that streamlines data privacy governance by allowing non-technical stakeholders to visually configure and deploy redaction rules. By providing a "no-code" interface to define how sensitive information like PII and PHI is handled, it bridges the gap between complex regulatory requirements (such as HIPAA and GDPR) and technical execution.
Find the PII in my system.
Phinder is a high-speed discovery tool that scans your files to find exactly where sensitive information lives. By identifying PII and providing real-world samples of your data, it takes the guesswork out of setting up Philter. It acts as the perfect scout, giving you the intelligence needed to build accurate redaction policies and verify that your sensitive data is fully protected.
Is the PII in my system changing?
Phield is an intelligent monitoring system that acts as a 24/7 sentinel for your sensitive data. By tracking the flow of PII across your organization, it learns what "normal" data activity looks like and automatically alerts you the moment it detects a suspicious spike or unusual trend. Phield provides the final layer of visibility, giving you the confidence that your data stays secure long after discovery and redaction are complete. Phield has an API and can consume from Apache Kafka.
How well is my PII redaction performing?
Philter Scope answers the question how do you know your redaction is working? Philter Scope is our standalone audit tool that provides precision and recall metrics to help you optimize your filtering policies. By comparing "golden" data sets with redacted text, Philter Scope shows where redaction can be improved and suggests policy changes to improve the accuracy.
Protect my data’s privacy while I analyze it.
Philter Diffuse is a privacy-first analytics tool that allows organizations to share and study sensitive data trends without ever exposing the actual information. By using a mathematical technique called differential privacy, it adds statistical noise to PII counts. This ensures that while the overall patterns and insights remain accurate for auditors and analysts, it turns high-risk data into safe, audit-ready intelligence.
Redact text being sent to OpenAI, Claude, and Google Gemini.
The Philter AI Proxy is a proxy that enables the safe use of LLMs by automatically redacting PII and PHI before it leaves your environment. With Philter, organizations can confidently leverage the power of AI without compromising privacy or security.
Lower-Level Developer Tools
The following open source projects are lower-level developer tools that allow you to build powerful PII redaction capabilities into your own software. We welcome contributions to all projects.
I want to serve PII-focused LLMs.
Ph-Eye (pronounced like the letters "P-H-I") is a service for hosting AI/NLP models for the purposes of finding PII and PHI in text. PH-Eye can be used standalone but it was designed and created for use with Phileas and Philter and as such provides tight integration with each. Ph-Eye can serve modern LLMs trained for identifying specific types of PII and PHI.
I want to include powerful PII redaction in my own software.
Phileas is the core of our software. It is a powerful software library that is capable of finding PII and redacting it. But it doesn't stop there. Phileas can also encrypt, mask, anonymize, and replace sensitive information, as well as apply redaction logic to give the user full control of the redaction process. Phileas is used by lots of other projects to power their data redaction.
The main Phileas implementation is the Java version. It has been ported to Phileas and Go, which may not have the same functionality as the Java version.
GitHub | Documentation - Java Implementation
GitHub | Documentation - Python Implementation
GitHub | Documentation - Go implementation
I want to test the throughput performance of Phileas.
We recognize the importance of performance when redacting PII. The Phileas Benchmark open source project provides a way to evaluate how fast redaction can be done across several pieces of text. We use this project to ensure any changes introduced into Phileas do not negatively affect its performance.
This project tests the performance of the Java implementation of Phileas.
I want to connect to Philter from my custom software.
Philter is an open source application for redacting PII via an API. To make integrating Philter in your applications easy, we have several open source Philter client SDK projects.
Running Philter in a mission-critical production environment? We offer commercial support, custom model training, and architectural reviews to ensure your deployment is flawless.
Copyright 2026 Philterd, LLC. All Rights Reserved.
Philter, Phileas, Phirestream, and PhiSQL are registered trademarks of Philterd, LLC.
