Not much for open source solutions. A simple captcha however would cost scrapers more to crack than Anubis.
But when it comes to “real” bot management solutions: The least invasive solutions will try to match User-Agent and other headers against the TLS fingerprint and block if they don’t match. More invasive solutions will fingerprint your browser and even your GPU, then either block you or issue you a tracking cookie which is often pinned to your IP and user-agent. Both of those solutions require a large base of data to know what real and fake traffic actually looks like. Only large hosting providers like CloudFlare and Akamai have that data and can provide those sorts of solutions.
What the alternative?
Not much for open source solutions. A simple captcha however would cost scrapers more to crack than Anubis.
But when it comes to “real” bot management solutions: The least invasive solutions will try to match User-Agent and other headers against the TLS fingerprint and block if they don’t match. More invasive solutions will fingerprint your browser and even your GPU, then either block you or issue you a tracking cookie which is often pinned to your IP and user-agent. Both of those solutions require a large base of data to know what real and fake traffic actually looks like. Only large hosting providers like CloudFlare and Akamai have that data and can provide those sorts of solutions.