FCaptcha

Open-source, invisible CAPTCHA that detects AI agents, bots, and headless browsers

Servicefreeglobal

FCaptcha is an open-source, self-hosted, invisible CAPTCHA that detects traditional bots, AI agents, and browser automation tools like Playwright and Selenium using behavioral signals, device fingerprinting, and proof of work. It blocks unwanted automated traffic with a single click or less, giving site owners a privacy-first, self-hosted alternative to hosted bot-detection services.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of FCaptcha - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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