Top 9 Open-Source Alternatives to reCAPTCHA

Product categories

Anti-Spam Bots Captcha Clean Code Code Analysis Cyber Security SPAM SPAM Protection Security Security & Privacy Web Application Security Web Security

Summary

The top open-source alternatives to reCAPTCHA are CleanTalk, mosparo, and CyberSiara. 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.

CleanTalk Landing Page
1

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
2

mosparo

the modern spam protection
Pricing:
- Open Source
#SPAM Protection #Security #Captcha
CyberSiara Landing Page
3

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
ALTCHA Landing Page
4

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
5

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
Cerber Security Landing Page
6

Cerber Security

Defends WordPress against hacker attacks, spam, trojans and malware.
Pricing:
- Open Source
- Freemium
- $99.0 / Annually
#Web Security #Web Application Security #Cyber Security
SonarQube Landing Page
7

SonarQube

SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.
Pricing:
- Open Source
- Freemium
- Free Trial
- $150.0 / Annually
#Code Analysis #Code Review #Code Coverage 1 social mentions
Lastpass Landing Page
8

Lastpass

LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Pricing:
- Open Source
#Password Management #Password Managers #Security & Privacy 22 social mentions
DOOM Captcha Landing Page
9

DOOM Captcha

Captchas don't have to be boring
Pricing:
- Open Source
#User Experience #Proxy Server #Tech 3 social mentions