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Private Captcha VS SharkEyes.dev

Compare Private Captcha VS SharkEyes.dev and see what are their differences

Private Captcha

Independent, privacy-first, self-hostable CAPTCHA service made in EU

Private Captcha Portal Dashboard
Rating
0 reviews
Pricing
Open source Paid Free trial €12 / Annually
Alternatives Is it good?
SharkEyes.dev

Protect your website forms from spam and fake signups without annoying captchas. Privacy-first security with zero fingerprinting. Try it now.

SharkEyes.dev screenshot
Rating
0 reviews
Pricing
Freemium $9 / Monthly (Pro Plan, 30 domains, Advanced features, Priority support)
Alternatives Is it good?
Thalam
OpenAI-compatible API gateway for GPT, Claude, Gemini, DeepSeek, Qwen, Kling and more. One key, one endpoint, one bill. Pay per token, no lock-in. sponsored

Which is more popular?

SPAM Protection popularity
100% vs 0%
alternatives listed
36 vs 6

Base details

Website, pricing, platforms and company facts side by side.

Private Captcha
SharkEyes.dev
Website privatecaptcha.com sharkeyes.dev
Pricing
Open source Paid Free trial €12 / Annually Official pricing
Freemium $9 / Monthly (Pro Plan, 30 domains, Advanced features, Priority support) Official pricing
Company Startup from Estonia · 2025 Startup from Israel · 1 - 9 employees · 2025
Listed in
Security & Privacy SPAM Protection Anti-Spam Captcha +1
Web Application Security Developer Tools Anti-Spam Security Security & Privacy Web App SPAM Protection Recaptcha Alternative Captcha +6

About Private Captcha and SharkEyes.dev

In their own words, as submitted to SaaSHub.

Private Captcha
SharkEyes.dev

Private Captcha offers a user-friendly CAPTCHA solution that protects forms and APIs while maintaining high privacy standards without requiring extra integration efforts. Instead of asking users to solve complex puzzles or track their behavior, Private Captcha solves an invisible cryptographic...

Read more about Private Captcha

Tired of spam bots attacking your website forms? Fake registrations, junk inquiries, and comment spam standard CAPTCHAs dont help. They only frustrate real users while "smart" bots bypass them anyway. SharkEyes takes a different approach. The system quietly detects spam and fake registrations in...

Read more about SharkEyes.dev

Features and specs

What each product offers, as listed by its team.

Private Captcha 3 features
SharkEyes.dev 4 features
  • privacy
    Private Captcha does not collect any behavioral or personal data
  • GDPR compliance
    Private Captcha is made and hosted in EU, uses only EU suppliers and also has EU isolation mode
  • accessibility
    Private Captcha does not require solving complex puzzles - all user has to do is to click a button
  • Privacy
    Prioritizes user privacy by default. SharkEyes does not harvest, store, or sell user telemetry data to third parties.
  • Security
    Protects web forms-including login, registration, contact, and comment sections-from automated spam, brute-force attacks, and bad bots using behavioral scoring.
  • Granular Control & Dashboard
    Includes an intuitive dashboard to set security rules, manage allowed domains, and toggle protection modes instantly.
  • Developer-Friendly
    Built for simple deployment with clean REST APIs, lightweight SDKs, and transparent configuration without complex infrastructure overhead.

Analysis

An editorial look at what each product does well and who it suits.

Private Captcha
SharkEyes.dev

Overall verdict

  • Private Captcha is a solid privacy-focused CAPTCHA alternative that offers effective bot protection without compromising user data, making it a strong choice for privacy-conscious websites.

Why this product is good

  • Privacy-first design that avoids tracking users or selling personal data, unlike some mainstream alternatives
  • Provides effective bot and spam protection while maintaining a smooth user experience
  • Often uses proof-of-work or privacy-preserving challenges that reduce friction compared to image-based puzzles
  • Helps websites comply with data protection regulations like GDPR
  • Lightweight and easy to integrate into existing web applications

Recommended for

  • Privacy-conscious businesses and developers who want to protect user data
  • Websites operating under strict data protection regulations such as GDPR
  • Small to medium businesses seeking an alternative to Google reCAPTCHA
  • Developers who prioritize minimal user friction while blocking bots and spam
  • Organizations wanting to reduce reliance on big-tech tracking services

No analysis of SharkEyes.dev yet.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Private Captcha
SharkEyes.dev
100% 100%
SPAM Protection
0% 0%
0% 0%
Web App
100% 100%
100% 100%
Captcha
0% 0%
0% 0%
Web Application Security
100% 100%

Questions & Answers

As answered by people managing Private Captcha and SharkEyes.dev.

Why should a person choose your product over its competitors?

SharkEyes.dev's answer:

Traditional captchas ruin user experience and lower conversion rates, while big security vendors often track user data across the web. SharkEyes balances high-grade security with complete user privacy and zero user friction, making it quick to deploy, affordable for growing businesses.

What makes your product unique?

SharkEyes.dev's answer:

SharkEyes delivers privacy first spam and bot protection without annoying captchas or invasive browser fingerprinting. It blocks automated submissions seamlessly in the background, ensuring a frictionless user experience while fully

How would you describe the primary audience of your product?

SharkEyes.dev's answer:

Web developers, SaaS founders, indie hackers, and digital agencies looking for an easy-to-integrate, privacy-centric alternative to reCAPTCHA or hCaptcha for protecting lead forms, signups, and feedback channels.

What's the story behind your product?

SharkEyes.dev's answer:

SharkEyes was created out of frustration with complex, user-unfriendly captchas that hurt site conversions and compromise visitor privacy. We wanted a lightweight, modern security solution that protects forms effectively without forcing real users to solve puzzles or giving away their personal browsing data.

Which are the primary technologies used for building your product?

SharkEyes.dev's answer:

JavaScript, Golang, Python, REST API, Webhooks, Cloud Infrastructure, Bash, and Lightweight Anomaly Detection Algorithms.

User comments

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Alternatives to Private Captcha and SharkEyes.dev

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