InputGuard Alternatives

InputGuard is described as 'The privacy friendly alternative to reCAPTCHA or other captcha tools' and is an app in the security & privacy category. There are more than 10 alternatives to InputGuard for a variety of platforms, including Web-based, Self-Hosted, SaaS, Docker and Wordpress apps. The best InputGuard alternative is Cap Captcha, which is both free and Open Source. Other great apps like InputGuard are Anubis, reCAPTCHA, Procaptcha and hCaptcha.

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InputGuard 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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
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 InputGuard?
Captcha
Like
Protect your business from bots and spam while ensuring 100% data privacy compliance. No puzzles, no tracking – just invisible security that works.
Cost / License
Paid
Proprietary
Origin
Austria
EU
Platforms
Software as a Service (SaaS)
Online
Is Captcha a good alternative to InputGuard?
EU Captcha
Like
Multilingual captcha developed by and for EU countries.
Cost / License
Free
Open Source
Platforms
Self-Hosted
Is EU Captcha a good alternative to InputGuard?