Open-source Test Data Management (TDM) and data anonymization platform focused on secure production-like development workflows.

Greenmask enables organizations to safely use realistic data in development, testing, staging, and AI-assisted engineering environments without exposing sensitive information.

• Stateless architecture
• In-flight anonymization
• No persistent storage of raw production datasets
• Production-like development workflows
• Subset-oriented data pipelines
• Extensible transformation system
• Infrastructure and automation friendly

Transform sensitive production data during logical dump workflows using configurable masking and transformation pipelines.

Create secure production-like datasets for development, testing, staging, CI pipelines, and ephemeral environments.

Extract only the required portion of production data while preserving relational consistency.

Generate realistic synthetic values and replacement datasets for non-production environments.

Reduce the operational and security risks associated with long-lived raw production copies in lower-trust environments.

Greenmask is designed around a stateless, stream-oriented architecture:

Database → Logical Dump Stream → Transformation Pipeline → Storage / Restore

During anonymization workflows:

• data is processed in-flight;
• transformations are executed directly within the dump stream;
• sensitive raw datasets do not need to be persistently stored unmasked.

This model is designed to support secure development and testing workflows in regulated and compliance-driven environments.

• PostgreSQL

• MySQL

• Website: https://www.greenmask.io
• Documentation: https://docs.greenmask.io
• Security Policy: https://github.com/GreenmaskIO/greenmask/blob/main/SECURITY.md

• GitHub Discussions
• GitHub Issues
• security@greenmask.io

For enterprise support and partnership inquiries, please contact us through the website or reach out to support@greenmask.io.

Greenmask is evolving toward a platform designed for secure, production-like, ephemeral development environments.

Our long-term direction combines:

• Test Data Management (TDM)
• In-flight anonymization
• Ephemeral environments
• API-first infrastructure workflows
• AI-assisted development workflows
• DBaaS and infrastructure integrations

This architecture is intended to help developers and AI-assisted workflows rapidly provision isolated feature-specific environments and safely iterate on realistic datasets.

Conceptual architecture:

This roadmap is being developed in collaboration with Solanica and OpenEverest as part of a broader effort to build open-source, enterprise-grade infrastructure for modern software delivery workflows.

Read more in the announcement blog post.

Greenmask is open-source software released under the Apache 2.0 License.