DOMPurify is a free runtime application self-protection solution. Monarx Threat Shield is a commercial runtime application self-protection solution by Monarx. Features, integrations, deployment and the company behind each one, side by side.
DOMPurify is a fast XSS sanitizer for HTML, MathML, and SVG.
Real-time web application firewall with runtime protection for PHP apps
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Based on what each listing shows: deployment, company size, price and open source.
DOMPurify fits if you want a cloud product, you need a free product and you want an open-source product.
Monarx Threat Shield fits if you need to run it on your own servers.
Common questions when comparing DOMPurify vs Monarx Threat Shield for runtime application self-protection.
DOMPurify: DOMPurify is a fast XSS sanitizer for HTML, MathML, and SVG.
Monarx Threat Shield: Real-time web application firewall with runtime protection for PHP apps. Built by Monarx.
The table above shows where their features, integrations, deployment and company size fit differ.
DOMPurify is open-source with 16,746 GitHub stars. Monarx Threat Shield is made by Monarx. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. DOMPurify and Monarx Threat Shield are both Runtime Application Self-Protection products. Key differences: DOMPurify is Free while Monarx Threat Shield is Commercial, DOMPurify is open-source. Use the table above to see where features, deployment and company size fit differ.
No Runtime Application Self-Protection shortlist yet. This is the closest one.
Updated 2026-11-02
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