ALTCHA provides privacy-first spam protection with a globally compliant and accessible alternative to CAPTCHAs. Protects against spam and abuse without tracking users, complying with GDPR, CCPA, and other regulations while ensuring a frictionless experience.

Zdog is a 3D JavaScript engine for Canvas and SVG. With Zdog, you can design and render simple 3D models on the Web. Zdog is a pseudo-3D engine. Its geometries exist in 3D space, but are rendered as flat shapes.

Editor.js is a block-styled editor for rich media stories. It outputs clean data in JSON instead of heavy HTML-markup. And more important thing is that Editor.js is designed to be API extendable and pluggable.