Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation
Cost / License
- Free
- Open Source
Application type
Platforms
- Self-Hosted
- Docker
Portugal
EU
PrivateStater Alternatives
Apps similar to PrivateStater include Cap Captcha, which is free and open source. Other options are Anubis, Google Analytics, Plausible Analytics and Private Captcha. You're spoiled for choice with Anti-Spam Tools like PrivateStater: we list more than 25 alternatives for the web, self-hosting and Linux.
Alternatives list
58 Anubis alternativesApplies sha256 proof-of-work challenges to incoming HTTP requests, targeting AI crawlers, bots that ignore robots.txt, and automated scrapers, protecting server resources and preventing unwanted search engine indexing for privacy-focused sites.
Cost / License
- Free Personal
- Open Source (MIT)
Application typeApplication types
Platforms
- Self-Hosted
- Go (Programming Language)
- Docker
Canada
296 Google Analytics alternativesGoogle Analytics provides in-depth insights into website traffic through Advanced Segmentation, Custom Reporting, and Motion Charts. Free for advertisers, publishers, and site owners, it simplifies complex features for better ad targeting, enhanced marketing strategies, and improved website conversions.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
United States
147 Plausible Analytics alternativesSimplifies web analytics with open-source design prioritizing privacy. Less than 1KB, no cookies, GDPR compliant. Quick insights without complex reports. User data stays private and under control, offering transparent tracking. Lightweight for faster site performance.
Cost / License
- Freemium
- Open Source (AGPL-3.0)
Application type
Platforms
- Online
- Self-Hosted
- Software as a Service (SaaS)
Estonia- EU
+4
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.
Cost / License
- Free Personal
- Proprietary
Application type
Platforms
- Online
- Self-Hosted
- Docker
- Estonia
- EU
+1
35 reCAPTCHA alternativesreCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
- United States
Friendly Captcha is an invisible CAPTCHA and bot protection solution that helps block bots and spam with privacy-first proof-of-work-without image or audio puzzles, cookies, or user tracking. GDPR- and CCPA-compliant and TÜV-certified as conformant with WCAG 2.
Germany- EU
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.
Czechia- EU
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.
Cost / License
- Freemium
- Open Source (Apache-2.0)
Application typeApplication types
Platforms
- Online
- Software as a Service (SaaS)
- Wordpress
United Kingdom
+3
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.
Cost / License
- Free
- Proprietary
Platforms
- Online
- JavaScript
- Software as a Service (SaaS)
mosparo is the modern solution for protecting your online forms from spam. The protection method is quite simple: mosparo blocks spam using rules matching the form’s data. The detection method is comparable to an e-mail spam filter.
Switzerland
+9
