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.
A zero database architecture, powered by a proprietary hybrid in-memory indexing engine algorithm, that enables CAPTCHA authentication to be performed using minimal data bits against server memory.
TrustCaptcha is a privacy-first, invisible CAPTCHA that protects your website from bots and spam—without disrupting your users.
Germany
EU
MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or...
Canada
Pakistan
Confident Technologies provides free CAPTCHA security software called Confident CAPTCHA, a picture CAPTCHA that stops spam and bots. Download our free CAPTCHA security software today.
United States
Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your Drupal, Wordpress and Joomla site or blog.
Privacy-first, self-hosted CAPTCHA for the modern web. No Google. No telemetry. No visual puzzles. Protect your software from bots without handing over your users' data to a third party.
Mexico
TrustSig replaces traditional CAPTCHAs with deep device fingerprinting. Puzzles and checkboxes frustrate human visitors and damage conversion rates. We built a platform that extracts hardware telemetry to block bot traffic out-of-band.
EstoniaEU
Belgium
