---
title: Introduction
description: Getting started with core library
icon: Album
---

## What is this?

Fumadocs Core offers server-side functions and headless components, built for App Router.

- Search (built-in: Orama, Algolia Search)
- Breadcrumb, Sidebar, TOC Components
- Remark/Rehype Plugins
- Additional utilities

<Callout title="Tip">

    It can be used without Fumadocs UI, in other words, it's headless.

    For beginners and normal usages, use [Fumadocs UI](/docs/ui).

</Callout>

## Installation

No other dependencies required.

```package-install
fumadocs-core
```

It offers simple document searching as well as components for building a
good docs. It is made for flexibility and speed.

<Cards>

<Card
  title="Breadcrumb"
  href="/docs/headless/components/breadcrumb"
  description="The navigation component at the top of screen"
/>

<Card
  title="TOC"
  href="/docs/headless/components/toc"
  description="A Table of Contents with active anchor observer"
/>

<Card
  title="Sidebar"
  href="/docs/headless/components/sidebar"
  description="The navigation bar at aside of viewport"
/>

<Card
  title="Search"
  href="/docs/headless/search"
  description="Implement document searching"
/>

</Cards>
