Side by side

Dawnscanner vs Pysa

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

Dawnscanner

Free plan LinuxSelf-hosted

Dawnscanner combines framework-aware Ruby checks with view-code analysis and mitigation guidance. Its text-only results and separate knowledge-base download are worth considering before adopting it.

Visit Dawnscanner

Pysa offers configurable taint analysis, CI support, and a local findings workflow at no cost. Check its analysis scope, memory needs, and potential false positives against your codebase before adopting it.

Visit Pysa

The facts

	Dawnscanner	Pysa
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Linux, Self-hosted	Extension, Linux, Mac, Self-hosted, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	1	1
Maker	Not published	Not published
Website	github.com	pyre-check.org
On static application security testing software	#10 of 25	#14 of 25

Dawnscanner: what it does well

Supports Rails, Sinatra, and Padrino.
Knowledge base has more than 680 checks in version 2.0.
Identifies XSS and SQL injection issues.
Lists vulnerabilities with mitigation actions.
Free and MIT licensed.

What to know first

Results are available in text format only.
Knowledge base must be downloaded separately.
Listed platforms are Linux and self-hosted.

Pysa: what it does well

Tracks data from sources to potentially dangerous sinks.
Includes models for built-in and common Python libraries.
GitHub Action can show results in Security code scanning.
SAPP provides a local interface to view and filter findings.

What to know first

Dependency source outside configured paths is not analyzed.
Inaccessible function source can lead to false positives.
Analysis may freeze when the machine lacks enough memory.
Default SAPP filters can trade false positives for false negatives.

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