#1
Anubis is a lightweight web AI firewall that protects sites from AI crawlers and scraping bots using configurable request challenges and bot policies.
21.7k stars693 forksMITlast commit Actively maintained
2 self-hosted Cloudflare Turnstile alternatives
Cloudflare Turnstile is a privacy-focused CAPTCHA alternative that verifies human users for websites and APIs without interactive puzzles. It provides managed challenges, bot-detection signals, and integration SDKs/endpoints to validate requests and reduce automated abuse.
Alternatives to Cloudflare Turnstile
#2
Lightweight, self-hostable CAPTCHA alternative using SHA-256 proof-of-work challenges to protect forms and APIs from bots without tracking or visual puzzles.
7.6k stars551 forkslast commit Actively maintained
What replacing Cloudflare Turnstile actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 2 of 2 shipped a commit in the last six months. Licences in this list: MIT. In exchange you take on hosting, backups and updates yourself.
Browse everything in Network Security (VPN, Firewall, WAF).
