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Prowler vs Maester: catalog facts
Prowler	Maester
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source, community driven.
Windows, macOS, Linux, Command line	Command line
Includes checks across multiple cloud platforms and frameworks.	More than 360 ready-made security tests Five compliance baselines in a single report
Requires cloud permissions and review of environment-specific findings.	Limited to Microsoft 365 and Entra tenants Requires PowerShell and Microsoft Graph permissions
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.