* [FCaptcha v1.10.1](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.

* [Recog v3.1.26](https://github.com/rapid7/recog) – Framework for identifying products, services, operating systems, and hardware through fingerprint matching.