Side by side

AWS Signer vs Notation

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

AWS Signer

Free plan APILinuxMac+2

AWS Signer covers signing and verification workflows across Lambda, IoT, and container images. API quotas and possible related charges are worth accounting for when planning use.

Visit AWS Signer

Choose Notation if you need a free CLI for signing and verifying OCI artifacts across development or CI/CD workflows. Its portable signatures and key management integrations support varied environments. Look elsewhere if you need a certificate supplied with the tool.

Visit Notation

The facts

	AWS Signer	Notation
Free plan	Yes	Yes
Open source	No	Not published
Runs on	API, Linux, Mac, Web, Windows	Linux, Mac, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	2	1
Maker	Not published	Not published
Website	aws.amazon.com	notaryproject.dev
On code signing software	#2 of 28	#6 of 28

AWS Signer: what it does well

Signs Lambda packages, supported IoT code, and OCI images.
Lambda checks signatures and package integrity at deployment.
IAM policies control access to resources and actions.
Signing profiles are manageable by console, CLI, or API.

What to know first

API actions have per-second quotas by account and Region.
No minimum API request rate is offered.
Related service charges may apply.
Lambda use may incur S3 storage charges.

Notation: what it does well

Free, open-source CLI under the Apache 2.0 license.
Runs on Linux, macOS, and Windows.
Signatures can move between OCI registries.
Validation works in disconnected environments without extra server infrastructure.
Integrates with existing key management systems through plugins.

What to know first

The project does not provide a certificate.
The tool focuses on OCI registries and OCI artifacts.
Support details are directed to supported release information.

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