Arcjet vs Monarx Threat Shield: side-by-side comparison (2026)

Arcjet: Developer-first security SDK for bot detection, rate limiting, and attack protection. Built by Arcjet.

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.

Arcjet is made by Arcjet. 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. Arcjet and Monarx Threat Shield are both Runtime Application Self-Protection products, and both cover WAF. Use the table above to see where features, deployment and company size fit differ.