IntelliJ IDEA is another extremely powerful and flexible IDE. You can download the tool from this website: https://www.jetbrains.com/idea/.
If you look carefully, you'll probably notice that IntelliJ iDEA looks very similar to Android Studio, and that is no coincidence. Android Studio is really just a modified version of IntelliJ IDEA. This also means that all the Flutter tools we installed for Android Studio are the exact same tools that are available for IntelliJ IDEA.
So, why would you ever want to use IntelliJ IDEA if you already have Android Studio? Android Studio has removed many of the features in IntelliJ IDEA that aren't related to Android development. This means that if you are interested in web or server development, you are going to have to use IntelliJ IDEA to get the same experience. With Flutter now supporting the web as one of its targets, this might just be enough of a reason to reach for IntelliJ IDEA over Android Studio.