ToolJet/docs/versioned_docs/version-2.1.0/app-builder/overview.md

---
id: overview
title: Overview
---

# App-Builder: Overview

ToolJet's App Builder allows you to build applications. ToolJet's app builder has the following major components:

- **[Topbar](/docs/2.1.0/app-builder/topbar)**: configure app settings
- **[Canvas](/docs/app-builder/canvas)**: Arrange the components to build the interface of app
- **[Left-sidebar](/docs/app-builder/left-sidebar)**: Add **[pages](/docs/tutorial/pages)**, **[datasources](/docs/data-sources/overview)**, **[inspect](/docs/how-to/use-inspector)** the components, queries or variables, and **[debug](#debugger)** the errors.
- **[Components library](/docs/app-builder/components-library)**(right sidebar): Drag any component or modify the property or styling
- **[Query Panel](/docs/app-builder/query-panel)**: Create, edit or manage the queries

<div style={{textAlign: 'center'}}>

<img className="screenshot-full" src="/img/v2-beta/app-builder/builder.png" alt="App Builder: Overview"/>

</div>