Captcheck Alternatives

Captcheck is described as 'Open source reCAPTCHA alternative' and is an app. There are more than 10 alternatives to Captcheck for a variety of platforms, including Web-based, SaaS, Self-Hosted, Docker and Wordpress apps. The best Captcheck alternative is Cap Captcha, which is both free and Open Source. Other great apps like Captcheck are Anubis, reCAPTCHA, Procaptcha and hCaptcha.

More about Captcheck

Captcheck alternatives page was last updated Dec 19, 2025

Cap Captcha
25 likes
Lightweight, modern open-source CAPTCHA alternative designed using SHA-256 proof-of-work.
Cost / License
Free
Open Source
Application type
Anti-Spam Tool
Origin
Portugal
EU
Platforms
Self-Hosted
Docker
Is Cap Captcha a good alternative to Captcheck?
Anubis
16 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.
48 Anubis alternatives
Cost / License
Free Personal
Open Source (MIT)
Application type
Bot Protection Service
Origin
Canada
Platforms
Self-Hosted
Go (Programming Language)
Docker
Is Anubis a good alternative to Captcheck?
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.
28 reCAPTCHA alternatives
Cost / License
Freemium
Proprietary
Application type
Anti-Spam Tool
Origin
United States
Platforms
Online
Is reCAPTCHA a good alternative to Captcheck?
Procaptcha
14 likes
Prosopo Procaptcha redefines user verification with a unique approach that emphasizes privacy and security. It's a pioneering solution designed to offer an alternative to conventional CAPTCHA systems that often compromise user privacy.
Cost / License
Freemium
Open Source (Apache-2.0)
Application type
Anti-Spam Tool
Origin
United Kingdom
Platforms
Online
Software as a Service (SaaS)
Wordpress
+3
Is Procaptcha a good alternative to Captcheck?
hCaptcha
13 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.
31 hCaptcha alternatives
Cost / License
Freemium
Proprietary
Application type
Anti-Spam Tool
Origin
United States
Platforms
Online
Is hCaptcha a good alternative to Captcheck?
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 Tool
Origin
India
Platforms
Online
Self-Hosted
Software as a Service (SaaS)
Is mCaptcha a good alternative to Captcheck?
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)
Platforms
Online
Software as a Service (SaaS)
+2
Is IronWall a good alternative to Captcheck?
mosparo
4 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 Tool
Origin
Switzerland
Platforms
Online
Self-Hosted
Python
JavaScript
Drupal
Django
PHP
Mautic
Wordpress
+9
Is mosparo a good alternative to Captcheck?
Friendly Captcha
10 likes
Friendly Captcha is a tool for preventing spam on your website.
24 Friendly Captcha alternatives
Cost / License
Freemium
Proprietary
Application type
Anti-Spam Tool
Origin
Germany
EU
Platforms
Online
Software as a Service (SaaS)
Is Friendly Captcha a good alternative to Captcheck?
InputGuard
1 like
InputGuard is the privacy friendly alternative to reCAPTCHA or other captcha tools.
Cost / License
Freemium
Proprietary
Platforms
Online
Self-Hosted
Software as a Service (SaaS)
Is InputGuard a good alternative to Captcheck?
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)
+2
Is MTcaptcha a good alternative to Captcheck?
IconCaptcha
Like
conCaptcha is a self-hosted captcha which is faster, more user-friendly and more customizable than other captchas - available for PHP and ASP.NET websites. Users no longer have to read any annoying text images, solve difficult math equations or play any puzzle games.
Cost / License
Free
Open Source (MIT)
Platforms
Self-Hosted
Is IconCaptcha a good alternative to Captcheck?