Procaptcha

What it does

Stop threats before they happen. Procaptcha offers robust bot protection without compromising user privacy. Lightweight, open source GDPR compliant bot protection. Switch from reCAPTCHA in minutes.

Establish trust on every request. Welcome real users and AI agents, stop abusive bots — GDPR-compliant, risk-based verification that minimises friction.

Real users, AI agents and bad bots all hit your site differently. Prosopo establishes trust on every request — legitimate humans pass invisibly, trusted agents are recognised, and abusive automation stops at the door. Switch from reCAPTCHA in minutes. Score the intent of every request — human, AI agent or bot — and apply verification only when risk thresholds are exceeded. Our advanced risk scoring evaluates behaviour in real time to deliver adaptive protection that minimises friction for legitimate traffic. Designed to minimise data collection and avoid cross-site tracking. Our privacy-first solution ensures GDPR compliance and protects user privacy without compromising security. Policy…from prosopo.io

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  ZENCAPTCHA2023 · zencaptcha.com · ▲115

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  Replace CAPTCHAs with WebAuthn passkeys for bot prevention2024 · github.com · ▲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

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  Cap2025 · capjs.js.org · ▲428

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  Procaptcha – Open-source, privacy preserving and frictionless CAPTCHA2024 · prosopo.io · ▲8

  We built Procaptcha to make sure there's an actually good alternative to Google's ReCAPTCHA that's not a complete nightmare for the end user. Crucially we're not just a giant ad network like almost all CAPTCHA providers [1]. Like with other CAPTCHA providers it's simple to set up, you just change a couple of tags [2]. We've got a few different CAPTCHA types at the moment, all running on a distributed network of nodes with no user tracking. [1] https://prosopo.io/articles/stop-giving-your-website-data-aw... [2] https://github.com/prosopo/captcha

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  reCAPTCHA v32018 · developers.google.com · ▲222

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  InstantDB – A Modern Firebase▲1,145

  Hey there HN! We’re Joe and Stopa, and today we’re open sourcing InstantDB, a client-side database that makes it easy to build real-time and collaborative apps like Notion and Figma. Building modern apps these days involves a lot of schleps. For a basic CRUD app you need to spin up servers, wire up endpoints, integrate auth, add permissions, and then marshal data from the backend to the frontend and back again. If you want to deliver a buttery smooth user experience, you’ll need to add optimistic updates and rollbacks. We do these steps over and over for every feature we build, which can…

  Dev tools · 2024 · github.com