[//]: # (title: 1. Prerequisites)

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## Download and Install IntelliJ IDEA
Download and install either IntelliJ IDEA Ultimate or IntelliJ IDEA Community Edition from [here](https://www.jetbrains.com/idea/download/).

## Check out Community Edition Source Files
 >  While not required, having the full sources of the platform and all bundled plugins available for browsing allows finding related implementations.
 >
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Download the IntelliJ IDEA Community Edition source files as described in the IntelliJ IDEA Community Edition [README](upsource:///README.md) file.

## Install Required Plugins
Make sure that the bundled *Plugin DevKit* plugin is enabled.
Install and enable [Grammar-Kit](https://plugins.jetbrains.com/plugin/6606-grammar-kit) and [PsiViewer](https://plugins.jetbrains.com/plugin/227-psiviewer) plugins.

## Create a Project
Create an [IntelliJ Platform Plugin project](gradle_prerequisites.md).