Cap

Cap

lightweight, modern open-source CAPTCHA

5.0
1 review

403 followers

Cap is a fast, lightweight, and modern open-source CAPTCHA alternative based on SHA-256 proof-of-work (PoW). It’s 250x smaller than hCaptcha, privacy-focused, fully customizable, and easy to self-host. Cap helps prevent spam and abuse without tracking users, making it ideal for privacy-conscious developers. Built for speed and simplicity, Cap is perfect for modern web apps, forms, and APIs that need secure, lightweight human verification.
Cap gallery image
Cap gallery image
Cap gallery image
Free
Launch Team / Built With
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Webflow | AI site builder
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What do you think? …

Erliza. P
Looks neat! Always cool to see lightweight alternatives popping up. Curious how it performs compared to traditional CAPTCHAs, especially in terms of speed and user experience.
Constantine

This is great. I will use it on my next project as it seems really straightforward and easy to implement. Congrats for the launch & good luck!

tiago

@aeromaniax thanks!

Kalan MacRow

Congrats on the launch, looks great!

Max Comperatore

kool

Jun Shen

I like the lightweight and privacy-focused approach! 😄

Adam Lababidi

We'll use this, looks so good and modern. Can we customize the style?

tiago

@migma yep! everything is customizable through css variables

Ryland Vallely

👏👏