CodeCaptcha Alternatives

Sites and apps similar to CodeCaptcha include Cap Captcha, which is free and open source. Other options are Anubis, reCAPTCHA, IronWall and hCaptcha. You can choose from more than 10 Anti-Spam Tools like CodeCaptcha for self-hosting and Linux.

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CodeCaptcha alternatives page was last updated Dec 19, 2025

Cap Captcha
30 likes
Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work and JS instrumentation
Cost / License
Free
Open Source
Application type
Anti-Spam
Origin
Portugal
EU
Platforms
Self-Hosted
Docker
Portugal
EU
Good alternative?Is Cap Captcha a good alternative to CodeCaptcha?
Anubis
21 likes
Applies sha256 proof-of-work challenges to incoming HTTP requests, targeting AI crawlers, bots that ignore robots.txt, and automated scrapers, protecting server resources and preventing unwanted search engine indexing for privacy-focused sites.
58 Anubis alternatives
Cost / License
Free Personal
Open Source (MIT)
Application typeApplication types
Bot Protection
DDoS Protection
Origin
Canada
Platforms
Self-Hosted
Go (Programming Language)
Docker
Canada
Good alternative?Is Anubis a good alternative to CodeCaptcha?
reCAPTCHA
127 likes
reCAPTCHA is a free service that protects your site from spam and abuse, using risk analysis techniques to tell humans and bots apart.
35 reCAPTCHA alternatives
Cost / License
Freemium
Proprietary
Application type
Anti-Spam
Origin
United States
Platforms
Online
United States
Good alternative?Is reCAPTCHA a good alternative to CodeCaptcha?
IronWall
1 like
IronWall is a Proof-of-Work (PoW) rate-limiting protocol designed to protect high-value API endpoints (AI generation, Auth, SMS triggers) from automated abuse.
Cost / License
Freemium
Open Source (MIT)
Application type
Anti-Spam
Platforms
Online
Software as a Service (SaaS)
+2
Good alternative?Is IronWall a good alternative to CodeCaptcha?
hCaptcha
12 likes
hCaptcha is designed to solve the most labor intensive problem in machine learning: labeling massive amounts of data in a timely, affordable, and reliable way.
Cost / License
Freemium
Proprietary
Application type
Anti-Spam
Origin
United States
Platforms
Online
United States
Good alternative?Is hCaptcha a good alternative to CodeCaptcha?
mosparo
6 likes
mosparo is the modern solution for protecting your online forms from spam. The protection method is quite simple: mosparo blocks spam using rules matching the form’s data. The detection method is comparable to an e-mail spam filter.
Cost / License
Free
Open Source (MIT)
Application type
Anti-Spam
Origin
Switzerland
Platforms
Online
Self-Hosted
Python
JavaScript
Drupal
Django
PHP
Mautic
Wordpress
Switzerland
+9
Good alternative?Is mosparo a good alternative to CodeCaptcha?
mCaptcha
4 likes
A no-nonsense CAPTCHA system with seamless UX | Backend component.
Cost / License
Free
Open Source (AGPL-3.0)
Application type
Anti-Spam
Origin
India
Platforms
Online
Self-Hosted
Software as a Service (SaaS)
India
Good alternative?Is mCaptcha a good alternative to CodeCaptcha?
Friendly Captcha
11 likes
Friendly Captcha is an invisible CAPTCHA and bot protection solution that helps block bots and spam with privacy-first proof-of-work-without image or audio puzzles, cookies, or user tracking. GDPR- and CCPA-compliant and TÜV-certified as conformant with WCAG 2.
Cost / License
Freemium
Open Source (MPL-2.0)
Application type
Anti-Spam
Origin
Germany
EU
Platforms
Online
Software as a Service (SaaS)
Germany
EU
Good alternative?Is Friendly Captcha a good alternative to CodeCaptcha?
UniqPin
3 likes
UniqPin is a free for non-commercial use service which destiny improve ability of interfaces detect a human or a computer operate with it.
Cost / License
Free Personal
Proprietary
Application type
Anti-Spam
Platforms
Self-Hosted
JavaScript
PHP
Good alternative?Is UniqPin a good alternative to CodeCaptcha?
Mollom
2 likes
Mollom is a freemium web service to get rid of spam, unwanted content and fake users on your Drupal, Wordpress and Joomla site or blog.
Cost / License
Freemium
Proprietary
Origin
Belgium
EU
Alerts
Discontinued
Platforms
Online
Good alternative?Is Mollom a good alternative to CodeCaptcha?
Sblam!
3 likes
Open-source implementation of server-side spam filtering of blog comments and forum posts.
Cost / License
Free
Proprietary
Application type
Anti-Spam
Origin
Poland
EU
Platforms
Linux
Online
Good alternative?Is Sblam! a good alternative to CodeCaptcha?
MTcaptcha
3 likes
MTCaptcha is a smart captcha service that prioritizes privacy and accessibility. It offers an adaptive invisible noCaptcha that is easy for humans but hard for bots, making verification frictionless. MTCaptcha is GDPR and WCAG compliant, ensuring that your data is never sold or...
Cost / License
Freemium
Proprietary
Origin
Canada
Platforms
Software as a Service (SaaS)
Canada
+2
Good alternative?Is MTcaptcha a good alternative to CodeCaptcha?