# SummitUI > WCAG-compliant, fully customizable headless Blazor components. SummitUI is a headless component library for Blazor that provides high-quality, accessible building blocks for your applications. It focuses on logic, accessibility, and performance across all Blazor render modes. ## Components - [Accordion](https://www.summitui.com/docs/accordion/llms.txt) - [AlertDialog](https://www.summitui.com/docs/alertdialog/llms.txt) - [Calendar](https://www.summitui.com/docs/calendar/llms.txt) - [Checkbox](https://www.summitui.com/docs/checkbox/llms.txt) - [DateField](https://www.summitui.com/docs/datefield/llms.txt) - [Dialog](https://www.summitui.com/docs/dialog/llms.txt) - [DropdownMenu](https://www.summitui.com/docs/dropdownmenu/llms.txt) - [FocusTrap](https://www.summitui.com/docs/focustrap/llms.txt) - [Popover](https://www.summitui.com/docs/popover/llms.txt) - [Select](https://www.summitui.com/docs/select/llms.txt) - [Switch](https://www.summitui.com/docs/switch/llms.txt) - [Tabs](https://www.summitui.com/docs/tabs/llms.txt) ## Guides - [DatePicker Composition](https://www.summitui.com/docs/guides/datepicker-composition/llms.txt) - [Drawer Composition](https://www.summitui.com/docs/guides/drawer-composition/llms.txt) ## Getting Started - [Installation](https://www.summitui.com/installation) ## Principles - **Headless**: Logic and state management without opinionated styling. - **Accessible**: Built-in WCAG compliance and ARIA attributes. - **Performant**: Optimized for WASM, SSR, and Interactive Server modes. - **Customizable**: Full control over markup and styling via data attributes.