Side by side

MOSTLY AI vs Windocks

Both stand on test data management software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

MOSTLY AI

Free plan APILinuxSelf-hosted+1

MOSTLY AI combines synthetic-data generation, data analysis, connectors, and deployment choices. Teams evaluating a deployment should account for the stated minimum resources for single-node Kubernetes and the Linux-only SDK local-mode GPU support.

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Windocks

Free plan APILinuxSelf-hosted+2

Windocks combines database cloning, masking, synthetic data, and refresh automation for non-production work. The Free plan has tight image and container limits; Standard adds capacity and email support for $499 a month, billed annually.

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The facts

	MOSTLY AI	Windocks
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	API, Linux, Self-hosted, Web	API, Linux, Self-hosted, Web, Windows
Lowest paid plan	Free or on request	Standard: $499 a month
Plans published	1	3
Maker	Not published	Not published
Website	mostly.ai	langgrant.com
On test data management software	#6 of 25	#10 of 25

MOSTLY AI: what it does well

Generates related tables while preserving their relationships
Supports text and geolocation alongside structured data
Offers API and Python client integration
Can deploy on-premises or in air-gapped environments

What to know first

SDK local-mode GPU support is Linux-only
Single-node Kubernetes needs at least 24 CPU cores and 48 GB RAM

Windocks: what it does well

On-demand delivery through web, command line, or REST API
Writable clones share disk blocks
Automated production refreshes are available
Sensitive-data obfuscation and synthetic data generation
Runs on standard Linux and Windows servers

What to know first

Free plan limits database images to 1 GB
Free plan allows one simultaneous container
Free plan includes no support
Standard is $499 a month, billed annually

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