Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work.
Portugal
EU
Cap Captcha vs reCAPTCHA Comments
- Cap Captcha is Free and Open Source
- Cap Captcha is Customizable, Lightweight and Privacy focused
reCAPTCHA AlternativesOnly apps from the EU
The best alternative to reCAPTCHA is Cap Captcha, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to reCAPTCHA and eight of them are so hopefully you can find a suitable replacement. Other interesting alternatives to reCAPTCHA are ALTCHA, Friendly Captcha, Private Captcha and TrustCaptcha.
Alternatives list
33 Cap Captcha alternatives
20 ALTCHA alternativesALTCHA 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.
ALTCHA vs reCAPTCHA Comments
Jesus DeboussierIts proof of work only - this is a delay mechanism only so I don't know why its in the "stop bots" category?
- ALTCHA is Free and Open Source
- ALTCHA is Privacy focused, Security-focused and Lightweight
Friendly Captcha is a leading cybersecurity company with a clear mission: to reliably defend against modern bot attacks and spam while complying with the GDPR and other privacy regulations. As Germany's largest CAPTCHA provider, Friendly Captcha uses innovative technology to...
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
- Software as a Service (SaaS)
Friendly Captcha vs reCAPTCHA Comments
Top Positive CommentThe most secure and privacy-aware solution on the market
Top Negative CommentPeter JepefIt doesn't actually stop bots
Jesus DeboussierComplete garbage - 200 EUR per month and puppeteer users botted it immediately
- Friendly Captcha is Freemium and Proprietary
- Friendly Captcha is Privacy focused
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.
+1
Private Captcha vs reCAPTCHA Comments
It's the only one that has solid backend code (frontend parts all have the same)
It has many pre-built integrations
bogatyrjovGDPR-complisnt and self-hosted.
- Private Captcha is Free Personal and Proprietary
- Private Captcha is Privacy focused and Lightweight
TrustCaptcha is a privacy-first, invisible CAPTCHA that protects your website from bots and spam—without disrupting your users.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
- Spring
- Kotlin
- Rust
- Ruby
- Python
- .NET Framework
- Craft CMS
- React
- Groovy
- JavaScript
- Angular
- Software as a Service (SaaS)
- Scala
- PHP
- Go (Programming Language)
- Typescript
- Java
- Wordpress
- Node.JS
- Vue.js
+4
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.
Cost / License
- Freemium
- Proprietary
Alerts
- Discontinued
Platforms
- Online
Protect your business from bots and spam while ensuring 100% data privacy compliance. No puzzles, no tracking – just invisible security that works.
Cost / License
- Paid
- Proprietary
Platforms
- Software as a Service (SaaS)
- Online
Czechia
Germany
Estonia
Poland
Belgium
Austria
I tried cap captcha on my site and the bots just kept on spamming me.