Greenmask

Greenmask is a database anonymization and test data management platform that transforms production databases into safe staging environments for testing. It enables developers to create realistic test data while protecting sensitive information through data masking, obfuscation, and synthetic data generation. The tool supports multiple databases including PostgreSQL and MySQL, offering features like database subsetting, deterministic transformations, and differential privacy. It integrates with CI/CD pipelines and provides parallel processing for efficient dump and restoration operations.

Developed by GreenmaskIO, Greenmask is written in Go and distributed under the Apache 2.0 license. The tool operates statelessly to preserve existing database schemas and validates both data and schema integrity throughout the transformation process. It supports various storage options and maintains compatibility with PostgreSQL utilities, making it suitable for teams requiring secure test environments across development, DevOps, machine learning, and compliance workflows.