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Oat

A semantic HTML and CSS component library with small optional JavaScript and Web Components, designed for straightforward interfaces without a framework or build pipeline.

Framework agnosticHTMLCSSWeb Components
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Working with this library

Verified 2026-10-04 against the official website, usage documentation and knadh/oat MIT license. Include oat.min.css and oat.min.js directly, use the CDN, or install @knadh/oat; native elements and semantic attributes receive contextual styling, with JavaScript for selected dynamic controls. The official usage page warns that the library is pre-v1 and breaking changes are possible. Editorial: a useful low-complexity alternative for server-rendered apps and small tools; global semantic styling is a deliberate commitment and is less granular than an unstyled primitive system. Framework agnostic refers to the library, not the documentation generator. No independent accessibility audit was performed.

Pricing

Open-source library

Free

MIT-licensed source; checked 2026-10-04. Optional third-party services or unrelated products are not included.

Last checked Oct 4, 2026. Prices and licensing may change.

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Compare Oat with alternatives

These guides include Oat and explain when to choose it, what you take on, and where another library may fit better.

Landing page preview

Landing page of Oat

Captured Oct 4, 2026. This is a visual reference; check the library's license before using its components.

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