Greenmask

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Greenmask is ranked #10 of 18 in data masking software on Inferse. It runs on Linux, macOS, Self-hosted. There is a free plan.

Compared on data masking software

Free plan: Yesgithub.com
Masking methods: staticgithub.com
Synthetic data: Yesgithub.com
Referential integrity: Yesgithub.com
Deployment options: on-premisesgithub.com
Data subsetting: Yesgithub.com

Facts

Purpose: Greenmask is an open-source utility for logical database dumping, anonymization, synthetic data generation, and restoration.github.com · 29 Sept 2026
PostgreSQL compatibility: Greenmask is compatible with PostgreSQL versions 11 and higher.docs.greenmask.io · 29 Sept 2026
Database support: PostgreSQL is fully supported, while MySQL is described as in progress and beta.github.com · 29 Sept 2026
Subsetting: Database subsetting can create smaller development databases while preserving referential integrity, including cyclic and polymorphic references.github.com · 29 Sept 2026
Transformations: Greenmask provides deterministic and random transformers, dynamic parameters, conditional transformations, and inheritance for partitions and foreign key references.docs.greenmask.io · 29 Sept 2026
Custom transformations: Users can create custom transformers that interact through standard input and output, and the tool also provides predefined templates.docs.greenmask.io · 29 Sept 2026
Storage integrations: Supported storage backends include local directories, S3-compatible storage, Azure Blob Storage, and SSH/SFTP.docs.greenmask.io · 29 Sept 2026
Database tools: Greenmask uses PostgreSQL's pg_dump and pg_restore utilities to handle schema dumping and restoration, and its dumps can be restored with pg_restore.docs.greenmask.io · 29 Sept 2026
CI/CD: Greenmask is designed to integrate into CI/CD systems for automated database anonymization and restoration.docs.greenmask.io · 29 Sept 2026
Security architecture: Greenmask describes a stateless in-flight transformation design that can anonymize data before it is persisted and does not require persistent storage of unmasked datasets in its normal workflow.github.com · 29 Sept 2026
Security reporting: The security policy asks researchers to report vulnerabilities privately by email or GitHub private vulnerability reporting and says receipt will be acknowledged within 72 hours.github.com · 29 Sept 2026
Supported releases: The security policy supports the latest stable release and lists older releases as unsupported.github.com · 29 Sept 2026
Installation limit: The installation guide says the install script works on Linux and macOS and that Windows is not supported yet.docs.greenmask.io · 29 Sept 2026
Company history: Greenmask says it was founded in 2023 with the launch of its Greenmask utility.greenmask.io · 29 Sept 2026