Explore Playgrounds

Realistic pyproject.toml with build system + tool config.

Minimal RSS 2.0 feed for testing parsers.

Realistic sales rows you can transform, sort and chart.

Classic demo-scene plasma — uses time uniform and trig.

Classic physics demo — balls bouncing off the walls.

Geometric monogram in two shades.

Pure-SVG circular spinner with stroke animation.

Build classes from tables using __index.

Spawn concurrent workers and wait for them all.

Backed enums and the match expression — PHP 8 essentials.

Ruby's three forms of anonymous code side by side.

GitHub Actions style — checkout, install, test, build.

Pull out matching nodes with a JSONPath expression.

Responsive top nav — hides links behind a hamburger on small screens.

Centered card with email + password, ready to plug into a real auth flow.

Single-tier pricing card with checkmarks and CTA.

Flatten a deeply nested object into key/value pairs.

Group an array of objects by a field and count members.

Pipeline: filter rows, sort by a field, project columns.

Capture the slug portion of any URL path.