Free / Open-sourceAI content detection and a full writing toolkit in one place
Free / Open-sourceAI content detection and a full writing toolkit in one place
adCAPTCHA records 50 monthly visits with -80.2% month-over-month growth and Paid pricing. Roundtable (Proof of Human) records 854 monthly visits with -60.5% growth and Contact for Pricing pricing.
Privacy-first human verification that swaps annoying puzzles for engaging images and video.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | adcaptcha.com | roundtable.ai |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 50 (50) | 854 (854) |
| MoM Traffic Delta | -202 (-80.2%) | -1.31K (-60.5%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (100%) |
| Direct Visits / mo | 21 | 336 |
| User Rating | 3.8 | 3.9 |
| Supported Platforms | Website | Website |
Privacy-first human verification that swaps annoying puzzles for engaging images and video.
Verify visitors with short image and video interactions instead of text or grid puzzles, using media you upload through the dashboard.
Multiple detection layers run behind a single interaction to catch sophisticated bots without adding friction for genuine users.
Turn the verification moment into a positive touchpoint by featuring your own media, or open the space to advertisers.
Pre-built integrations for popular platforms plus a documented API let teams add human verification to a site or app in minutes.

Prove every user is real — invisibly and continuously.
Proof of Human runs silently behind login and checkout flows, scoring behavior in under 200 milliseconds without CAPTCHAs or friction for real people.
Continuous behavioral models look for programmatic typing, teleporting mouse movement, jump scrolling, centered clicks and pasted text to catch bots and AI agents mid-session.
The service states it collects no PII and does no cross-site tracking, helping teams meet compliance and privacy requirements.
A single script tag with a site key and user ID is enough to begin verifying sessions, and results include an example session report with explainable signals.
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