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Greenmask

Free#23 of 25 in Database Security Software

Greenmask: A focused PostgreSQL utility for masking, synthetic data, subsetting, and test data workflows. Ranked #23 of 25 in Database Security Software by our editors (6.9/10); pricing: Open source; best for open-source PostgreSQL anonymization pipelines.

6.9/10Editor score

Visit Greenmask

Greenmask6.9 Visit Greenmask

At a glance

Editor score
6.9 / 10
Pricing
Open source
Best for
Open-source PostgreSQL anonymization pipelines
Paid from
Free
Activity monitoring
No
Founded
2023
Facts checked
20 Sep 2026

Where it wins
- PII masking, synthetic data, and deterministic transformations
- Referentially consistent database subsetting and validation diffs
- Parallel execution with local and S3-compatible storage
Where it doesn't
- PostgreSQL is the currently supported database engine
- No activity monitoring, access governance, or audit reporting
- No threat detection or AI features

Our verdict on Greenmask

Greenmask is a self-hosted, open-source command-line utility for PostgreSQL anonymization and test data management. It is designed for teams that need production-like but anonymized data for development, testing, staging, analytics, or backup workflows. Its core capabilities include logical database dumping and restoration, PII masking, synthetic data generation, deterministic hash- and random-based transformations, and database subsetting with referential consistency. It runs on Linux and macOS and supports on-premises deployment.

The tool fits closely into a PostgreSQL-centered ecosystem. It integrates with pg_dump and pg_restore, Docker, CI/CD pipelines, and local directory or S3-compatible storage. Listed storage integrations include AWS S3, MinIO, and Google Cloud Storage. Parallel dump and restore execution can support larger workflows, while transformation and schema validation with diffs provides a way to check changes during processing. Custom transformers, dynamic parameters, and partitioned-table transformation inheritance add control for teams with specialized data-handling rules.

Greenmask is strongest when the goal is to create or restore anonymized PostgreSQL datasets through repeatable pipelines. Its scope is narrower than a broader database security platform: PostgreSQL is currently supported, with MySQL described as in development, and the product does not provide activity monitoring, access governance, audit reporting, or threat detection. Choose Greenmask for open-source, self-hosted masking, synthetic data, subsetting, and validation workflows around PostgreSQL. Teams seeking multi-engine coverage or ongoing security monitoring should choose a product with those capabilities instead.

Your product? Our editors can test Greenmask in depth and publish a review, labelled as paid · from $149/mo →

Greenmask pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on greenmask.io

Greenmask fact sheet

Free plan	Not verified
Paid from	Free
Activity monitoring	No
Access governance	No
Audit reporting	No
Data masking	Yes
Threat detection	No
Deployment	On-premises
Database coverage	Single engine
Deployment	Self-hosted
Platforms	Linux, macOS
Support	Email, Community, Docs · 24/7
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Integrations	9 integrations: PostgreSQL, pg_dump, pg_restore, S3-compatible storage, AWS S3, MinIO …
Pricing	Open source
Website	greenmask.io
Facts checked	20 Sep 2026

Greenmask integrations

Greenmask lists 9 integrations on its own site.

PostgreSQL
pg_dump
pg_restore
S3-compatible storage
AWS S3
MinIO
Google Cloud Storage
Docker
CI/CD pipelines

Alternatives to Greenmask

See all Greenmask alternatives →

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Featured on iTechGuides

Greenmask is listed in our Database Security Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update