OSS Discovery

UN
Global
SECURITY & PRIVACY
CLOUD-READY
ACTIVELY MAINTAINED
FREE
Cap

CAP

"Cap: A modern, lightweight, self-hosted CAPTCHA alternative. Offers fast, private, and customizable protection using SHA-256 proof-of-work. 250x smaller than hCaptcha, with zero telemetry. Ideal for site admins seeking control and balance. Integrates easily with your stack, putting security levers in your hands."

GITHUB STARS
5.3k
+12% this month
FORKS
377
Active community
LAST PUSH
Apr 24, 2026
High momentum
WATCHERS
14
Tracking updates
LICENSE
Other
Commercial use
"Cap: A modern, lightweight, self-hosted CAPTCHA alternative. Offers fast, private, and customizable protection using SHA-256 proof-of-work. 250x smaller than hCaptcha, with zero telemetry. Ideal for site admins seeking control and balance. Integrates easily with your stack, putting security levers in your hands."

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

JavaScript
JavaScript
CSS
CSS
Rust
Rust

VISUAL INTERFACE

Screenshot 1
Screenshot 2
Screenshot 3

The Quick Glance

Status
Active
Category
Security & Privacy
Pricing
Free
Self-Hosted
No
Available on
Windows
macOS
Linux
Latest Release
widget@0.1.45
Apr 22, 2026

Relative Standing — across 1,284 tools

STARS5.3k
Top 47% globally
FORKS377
Top 54% in Open Source
ACTIVITYHigh
Top 29% Activity
WATCHERS14
Top 73% Community