Zumerlab
An independent software lab building open-source tools for the web. MIT-licensed, with source and documentation on GitHub.
Libraries
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Orbit
Radial interfaces in CSS: gauges, knobs, pie menus, and dashboards. No layout JavaScript.
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Zumly
Zoom through nested views instead of switching screens. Pluggable transitions, a hash router, and prefetching.
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SnapDOM
Capture DOM elements as SVG, PNG, JPG, WebP, canvas, or Blob. Preserves styles and fonts. Zero dependencies.
Tooling & agents
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Snapeye
Capture, compare, and record a running web app for coding agents. Images, visual diffs, and recordings saved to disk.
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Snapdiff
Visual regression testing in the browser. Capture components, compare them with baselines, and review what changed.
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SnapSurf
Web navigation and verification for AI agents, with semantic diffs and assertions after each action.
Snapeye and Snapdiff are built on SnapDOM.