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
Private Captcha Alternatives
Apps similar to Private Captcha include Cap Captcha, which is free and open source. Other options are Anubis, reCAPTCHA, ALTCHA and Procaptcha. Anti-Spam Tools like Private Captcha are a crowded field, with more than 25 alternatives for the web, self-hosting, Windows and Linux.
Alternatives list
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
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
- Germany
- EU
+4
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...
Cost / License
- Freemium
- Proprietary
Platforms
- Software as a Service (SaaS)
Canada
+2
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
Cost / License
- Free
- Proprietary
Platforms
- Online
conCaptcha is a self-hosted captcha which is faster, more user-friendly and more customizable than other captchas - available for PHP and ASP.NET websites. Users no longer have to read any annoying text images, solve difficult math equations or play any puzzle games.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
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
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.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
- Wordpress
Estonia- EU
Cost / License
- Free
- Open Source
Platforms
- Self-Hosted
India
United States
Austria
