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Collect security logs, investigate threats, and automate responses
Cap
Add self-hosted bot protection without visual puzzles
Meet Cap
Cap is an open-source CAPTCHA system that website operators can run on their own infrastructure. It combines computational proof-of-work with browser instrumentation challenges, allowing verification to run without asking visitors to identify objects in pictures. The system is designed to keep verification traffic between a visitor and the site's own servers.
Developers add Cap's widget to the frontend and connect it to a verification backend. Its server-side verification API supports migration from common CAPTCHA services, while the widget can be styled through CSS variables. Configuration options include controls for automated browsers. Cap provides documentation, a public demonstration, and deployment guidance for teams that want to manage their own bot-protection layer.
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- Website
- trycap.dev
- Status
- Launched
- Category
- Security & privacy
- Listed
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