Anubis is described as 'Weighs the soul of your connection using a sha256 proof-of-work challenge in order to protect upstream resources from AI scraper bots' and is a DDoS Protection system in the security & privacy category. There are more than 50 alternatives to Anubis for a variety of platforms, including Web-based, SaaS, Self-Hosted, JavaScript and Wordpress apps. The best Anubis alternative is Cloudflare, which is free. Other great apps like Anubis are Cap Captcha, reCAPTCHA, Private Captcha and Procaptcha.
Delivers SaaS transparent proxy to shield websites, integrating dynamic DNS, global CDN, and web application firewall; blocks DDoS and targeted attacks, optimizes traffic for speed, reduces server load, analyzes threats, supports flexible deployment, and caching features.
Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation
reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.
Private Captcha is an independent, privacy-first, self-hostable Proof-of-Work CAPTCHA service made in EU. Instead of asking users to solve complex puzzles or track their behavior, Private Captcha solves an invisible cryptographic task in the background.
Prosopo Procaptcha redefines user verification with a unique approach that emphasizes privacy and security. It's a pioneering solution designed to offer an alternative to conventional CAPTCHA systems that often compromise user privacy.
BunkerWeb is a next-generation and open-source Web Application Firewall (WAF).
IPASIS provides real-time bot detection and fraud prevention through a simple REST API. It analyzes IP addresses and email addresses simultaneously, returning an Interaction Trust Score (0-100) that indicates whether an interaction is from a legitimate user, a bot, or a...
ALTCHA is a privacy-first solution built to help developers and website owners stop bots, spam, and automated abuse — without making things harder for real users. It replaces traditional CAPTCHA systems with a smarter, quieter approach to verification and threat detection.
KnowBe4 is the world’s largest integrated platform for security awareness training combined with simulated phishing attacks.
Turnstile is Cloudflare's smart CAPTCHA alternative. It automatically chooses from a rotating suite of non-intrusive browser challenges based on telemetry and client behavior exhibited during a session.
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