Top 4 Open-Source Alternatives to ALTCHA

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ALTCHA

ALTCHA is a free CAPTCHA alternative that uses a proof-of-work mechanism to protect your website, and online services from spam.

As ALTCHA is an open source project, you can find more open source alternatives and stats on LibHunt.

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Pricing:

Open Source
Free

Platforms:

Web
REST API

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Product categories

APIs Authentication B2B SaaS Captcha Developer Tools Online Services Open Source SPAM SPAM Protection Security Security & Privacy Web Application Security

Summary

The top open-source alternatives to ALTCHA are mosparo, CleanTalk, and 2captcha. 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
#SPAM Protection #Security #Captcha
CleanTalk Landing Page
2

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
2captcha Landing Page
3

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
BoxyHQ Landing Page
4

BoxyHQ

B2B SaaS: Make your app enterprise-ready! Authentication - SAML/OIDC SSO, Directory Sync (SCIM 2.0), Audit Logs, Data Privacy Vault, and more!
Pricing:
- Open Source
- Free
- Free Trial
- $49.0 / Monthly (Per connection)
#B2B SaaS #Developer Tools #Security & Privacy