InputGuard Alternatives

Apps similar to InputGuard include Cap Captcha, which is free and open source. Other options are Anubis, reCAPTCHA, PrivateStater and Procaptcha. You can choose from more than 10 Anti-Spam Tools like InputGuard for the web and self-hosting.

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InputGuard alternatives page was last updated Sep 11, 2026

Captcha
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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
Good alternative?Is Captcha a good alternative to InputGuard?
Menta CAPTCHA
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Privacy-first, self-hosted CAPTCHA for the modern web. No Google. No telemetry. No visual puzzles. Protect your software from bots without handing over your users' data to a third party.
Cost / License
Freemium
Open Source (AGPL-3.0)
Application type
Anti-Spam
Origin
Mexico
Platforms
Online
Self-Hosted
Software as a Service (SaaS)
Python
Mexico
Good alternative?Is Menta CAPTCHA a good alternative to InputGuard?
EU Captcha
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Multilingual captcha developed by and for EU countries.
Cost / License
Free
Open Source
Platforms
Self-Hosted
Good alternative?Is EU Captcha a good alternative to InputGuard?
Captcheck
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Open source reCAPTCHA alternative.
Cost / License
Free
Open Source
Platforms
Online
Self-Hosted
Good alternative?Is Captcheck a good alternative to InputGuard?
NoBot CAPTCHA API
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NoBot CAPTCHA API is a developer-friendly alternative to Google reCAPTCHA that helps prevent automated bot traffic without compromising user privacy.
Cost / License
Freemium
Proprietary
Application type
Anti-Spam
Platforms
Online
Software as a Service (SaaS)
+1
Good alternative?Is NoBot CAPTCHA API a good alternative to InputGuard?