Top 5 Open-Source Alternatives to AuthKong

AuthKong

A reliable captcha service, offers advanced security to protect websites from spam and abuse while ensuring a user-friendly experience for legitimate visitors.

Product categories

Anti-Spam Bots Captcha Cyber Security Online Services SPAM SPAM API SPAM Protection Security Security & Privacy Web Application Security Web Security

Summary

The top open-source alternatives to AuthKong are ALTCHA, 2captcha, and CleanTalk. 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.

ALTCHA Landing Page
1

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
#Security & Privacy #SPAM Protection #Anti-Spam
2captcha Landing Page
2

2captcha

2captcha is captcha bypassing software which offers various exciting tools and simple module that gives the fundamental outlook of the captcha.
Pricing:
- Open Source
- Paid
- $0.5 (per 1000 CAPTCHAs)
#Captcha #Web Application Security #Web Security 42 social mentions
CleanTalk Landing Page
3

CleanTalk

Spam protection for WordPress, Joomla, Drupal, and any other websites
Pricing:
- Open Source
- Free Trial
- $12.0 / Annually
#SPAM Protection #Security #SPAM 6 social mentions
mosparo Landing Page
4

mosparo

the modern spam protection
Pricing:
- Open Source
#SPAM Protection #Security #Captcha
CyberSiara Landing Page
5

CyberSiara

Leverage the complexity of the human eye to beat bots in a way no other CAPTCHA can. Keep your privacy. Secure your Site. Enhance your User Experience.
Pricing:
- Open Source
- Freemium
- Free Trial
- £15.0 / Monthly (Tier 1, up to 1,000 queries)
#Cyber Security #Captcha #Bots 1 user reviews