* [camofox-browser v1.18.0](https://github.com/jo-inc/camofox-browser) – Anti-detection browser server exposing a REST API for AI agents, using low-level Firefox fingerprint spoofing and accessibility snapshots.

* [FCaptcha v1.43.0](https://github.com/WebDecoy/FCaptcha) – Detect bots, vision-based AI agents, headless browsers and automation using 40+ behavioral signals plus server-verified SHA-256 proof-of-work.

* [Arcjet v1.14.0](https://github.com/arcjet/arcjet-js) – SDK for implementing security features like bot detection, rate limiting, and email validation in JavaScript applications.

* [bot-signal v2.0.18](https://github.com/okasi/bot-signal) – TypeScript-based bot signal detection toolkit for browser and Node, combining instant checks, behavioral analysis, and server-side IP/TLS/timezone validation without API keys.