PMD, sfdx-scanner, Clayton, CodeScan.
The code-SAST category covers Apex linting, the PMD ruleset, ESLint LWC rules, and (in the SaaS variants) deeper data-flow analysis. None of them cover org posture, identity, Connected Apps, or Agentforce. For an AppExchange submission that needs the full reviewer-checklist coverage, the SAST category is one slice of the answer.
Honest Where they win: PMD and sfdx-scanner are Salesforce-mandatory. Clayton has the polished IDE feedback loop. CodeScan has the AutoRABIT-backed deployment integration. Vulkro complements them; it does not replace PMD inside the AppExchange submission pipeline.