Top 5 Open-Source Alternatives to IconCaptcha

IconCaptcha

IconCaptcha is a self-hosted, fast, simple and user-friendly captcha for PHP.

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Product categories

Captcha SPAM Protection Security & Privacy Security Anti-Spam SPAM API Web Application Security

Summary

The top open-source alternatives to IconCaptcha are mosparo, ALTCHA, and Cap Captcha. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

mosparo Landing Page
1

mosparo

the modern spam protection
Pricing:
- Open Source
#Security #SPAM Protection #Security & Privacy
ALTCHA Landing Page
2

ALTCHA

ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.
Pricing:
- Open Source
- Free
#Anti-Spam #SPAM API #SPAM Protection 3 social mentions
capjs.js.org
3

Cap Captcha

Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work.
Pricing:
- Open Source
#Security #SPAM Protection #Security & Privacy
Private Captcha Landing Page
4

Private Captcha

Independent, privacy-first, self-hostable CAPTCHA service made in EU
Pricing:
- Open Source
- Paid
- Free Trial
- €12 / Annually
#Anti-Spam #SPAM Protection #Security & Privacy
prosopo.io
5

Prosopo.io

Protect your applications from bots with Procaptcha. GDPR compliant, privacy friendly, open source, and better value than alternatives. Switch from reCAPTCHA in minutes.
Pricing:
- Open Source
- Freemium
- Free Trial
#Web Application Security #Security #SPAM Protection 1 user reviews