Arcjet

Arcjet deserves a place in the catalog because it speaks to a more current security posture than perimeter-heavy tooling alone. The official product story is explicitly about runtime security that ships with the application, including bot defense, signup protection, rate limiting, sensitive data controls, and AI-specific protections such as prompt injection and budget enforcement. That makes Arcjet relevant to teams building modern SaaS products and AI features that need protection close to the request path rather than in a distant security program.

It also belongs here because the pricing page is public enough to evaluate honestly, even if it is not fully self-serve at the high end. Arcjet clearly publishes a free entry point for up to 5 rules and 3 developers, then positions Pro for advanced bot detection and team use cases, with Enterprise for mission-critical deployments. That is more transparent than many security products in adjacent categories, and the product is concrete enough to compare against app-security SDKs, bot-defense layers, and AI guardrail infrastructure.