AI · alternatives · 2026

24 alternatives to adCAPTCHA

Secure your site, elevate your brand, boost ad revenue

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. adCAPTCHA launched in 2024; newer entries below may have overtaken it.

1
ZENCAPTCHA▲115
Privacy-first bot & spam defense, GDPR compliant CAPTCHA
2023 · zencaptcha.com · its alternatives →
2
The Ethical Ad Blocker▲66
Solve the messy issues around ad blocking once and for all
2015 · tinysubversions.com · its alternatives →
3
Google Invisible reCAPTCHA▲428
Protects your website from spam and abuse
2017 · cloud.google.com · its alternatives →
4
Procaptcha▲3
An open-source captcha alternative to stop bots and fraud
2024 · prosopo.io · its alternatives →
5
powCAPTCHA▲10
Next-gen captcha | anti bot & spam filter
2025 · powcaptcha.com · its alternatives →
6
CodeCaptcha - Hide web links behind coding challenges▲163
Hello HN, I made this silly project over the long weekend. It’s pretty basic right now and the captchas are very easy. I plan to add captcha difficulty levels for link creators soon.
2022 · codecaptcha.io · its alternatives →
7
AdClone AI▲224
Remix any ad in Linkedin's Ad Library
2025 · app.sellable.dev · its alternatives →
8
GPT-AdBlocker▲81
Block all ads and sponsorships in YouTube videos using AI
2023 · pureblock.app · its alternatives →
9
ClickFreeze▲93
Protect your ad clicks against bots and fake traffic
2023 · clickfreeze.io · its alternatives →
10
ClicKarma.io▲90
Don’t let bots click on your ads
2023 · clickarma.io · its alternatives →
11
BlockBear▲147
Block ads and protect your privacy on iOS with a bear
2015 · blockbear.com · its alternatives →
12WW
wehatecaptchas – we’ll keep the bots out without annoying your users▲136
2019 · wehatecaptchas.com · its alternatives →
13
Replace CAPTCHAs with WebAuthn passkeys for bot prevention▲71
I built Nocaptcha after getting frustrated with traditional CAPTCHAs both as a user and developer. WebAuthn passkeys offered a promising alternative that's both more secure and user-friendly. What makes Nocaptcha different: - Uses WebAuthn standard instead of puzzle-solving - No need for users to remember passwords or solve puzzles - Open source Current limitation: Working with W3C WebAuthn Community Group on true passkey disposal for this use case. Looking for feedback particularly on: 1. Integration experience 2. User experience compared to traditional CAPTCHAs
2024 · github.com · its alternatives →
14
Crystal▲145
An ad blocker for iOS 9. Browser faster, stop wasting bits.
2015 · crystalapp.co · its alternatives →
15
Let's encourage ad blocking▲92
We check for and encourage the use of an ad blocker.
2016 · blockads.fivefilters.org · its alternatives →
16
Asora▲108
Stop ads, restore privacy, earn crypto.
2018 · its alternatives →
17
Anti Block Me▲74
Stop losing ad revenue
2022 · its alternatives →
18
Detecting adblock, without JavaScript, by abusing HTTP 103 responses▲108
Detect adblockers without Javascript by abusing early hints - Mechazawa/103-early-anti-adblock
2024 · github.com · its alternatives →
19
FakesBlocker▲65
Find and block impersonator accounts/bots on Twitter!
2018 · its alternatives →
20
Asora Ad-Blocker▲71
Ad-free safe browsing that pays.
2018 · its alternatives →
21
EasyCaptcha▲1
Protects your website and forms against spam and bots
2021 · its alternatives →
22
Bemobs▲11
Protect your campaigns from spies, bots & bad traffic
2025 · bemobs.com · its alternatives →
23
Optimal BLOCK▲91
Block ads and tracking across all mobile browsers and apps
2016 · optimal.com · its alternatives →
24
BlockBust▲66
Fight back against ad blockers
2016 · blockbust.io · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →