#27 in Application SecurityUpdated 2026-08

Friendly Captcha

by Friendly Captcha · Invisible proof-of-work CAPTCHA with privacy compliance

39 — BenchRank score out of 100

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Overview

Friendly Captcha is a bot-protection service that replaces visible CAPTCHA challenges with a proof-of-work puzzle solved in the browser while the user fills in a form, alongside risk signals such as proxy, VPN, WebDriver and bot detection. Sites add a widget script and verify submissions through a siteverify API that returns risk intelligence data.

Best for: Sites needing GDPR-compliant, accessible bot protection on forms without user-facing challenges.
Pricing: Free plan for non-commercial low-traffic sites, then €9, €39 or €200 per month depending on domains and request volume, with custom pricing for Enterprise.
Runs on: Self-hosted

Strengths and trade-offs

Strengths

Invisible: proof-of-work runs in the background, no labelling
No cookies, trackers or personal data stored from users
WCAG 2.2 AA certified; GDPR, PCI DSS and DORA compliant
API compatible with other CAPTCHAs; React, Vue, Angular libraries

Trade-offs

Starter at €9/month covers only one domain and 1,000 requests
Risk intelligence and a 99.9% uptime guarantee start at €200/month
Free plan is limited to non-commercial, low-traffic sites
ISO 27001 certification is listed as still in progress

Pricing

Published plans from Friendly Captcha’s own pricing page, in EUR. Usage charges and add-ons may apply on top.

Friendly Captcha pricing tiers, monthly rates in EUR
Plan	Monthly	Includes
Starter	€9flat rate	1 protected domain Up to 1,000 requests / month Free 30 day trial No image labelling tasks for users
Growth	€39flat rate	Up to 5 protected domains Up to 5,000 requests / month Usage statistics Free 30 day trial
Advanced	€200flat rate	Up to 50 protected domains, 50,000 requests / month Real-time risk intelligence and smart difficulty scaling Dedicated data centres (e.g. EU only), 99.9% guaranteed uptime User management and online support
Enterprise	Contact sales	Unlimited protected domains and requests Professional analytics and reporting SSO, enhanced access control and audit logs Self-hosted endpoint option and engineer support
Free CAPTCHA for non-commercial use	—	1 protected domain Up to 1,000 requests / month Non-commercial, low-traffic websites only

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 0 out of 100
API quality: 10 out of 100
Documentation: 90 out of 100
Agent friendliness: 80 out of 100
Changelog: 0 out of 100
Marketing site structure: 60 out of 100
Operational trust: 60 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 60 out of 100
Maintenance: 100 out of 100

This doesn’t look right — report a problem with Friendly Captcha’s score

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