### Overview - **Native HTML UI controls are too inflexible to meet modern design and UX requirements.** - **To compensate, projects rebuild UI components in JavaScript, leading to heavy bundles, accessibility issues, and inconsistent behavior.** - **Open UI aims not to reinvent UI components, but to standardize their semantics and extension points at the browser level.** ##### 2026-01-11 [Open UI](https://open-ui.org/) is a community-led project standardising user interface (UI) components within web browsers, enabling their extension and styling. Its primary aim is to allow greater freedom in customising and extending fundamental UI elements used by web developers and designers (e.g. <select>, checkboxes, radio buttons, date pickers, etc.). But another 15 years have gone by since the last major revision to form and UI interfaces. Most complex web projects today need far more than what HTML5 form and UI controls provide. And so, all-too-often today's web developers turn to heavy JavaScript frameworks to build the user interfaces their designers are asking for. These custom interfaces are rarely fully accessible. They slow down the page, consume power, open security vulnerabilities and exclude people.