# Cap

> Add self-hosted bot protection without visual puzzles

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.

## Listing details

- Canonical BetaNeon page: https://betaneon.com/products/cap-captcha
- Official website: https://trycap.dev/
- Category: Security & privacy / Threat detection & response
- Status: Launched
- Topics: Developer tools, Open source, Privacy, Security, Self hosted
- Listing updated: 2026-10-30T16:50:13.167Z
- Information source: https://trycap.dev/

This is a product introduction, not an endorsement. Confirm current availability, features, and prices on the official website. Community upvotes on BetaNeon are not star ratings.