Top Rated for Android Studio

InnerBuilder

Adds a Builder action to the Generate menu (Alt+Insert) which generates an inner builder class as described in Effective Java.

PlantUML integration

PlantUML diagramming tool integration.

Free MyBatis plugin

Free Mybatis plugin.

Main Menu toggler

Main Menu visibility toggler for IDEs based on the IntelliJ platform.

GoToTabs

The plugin adds menu actions allowing you to go to a specific tab.

hidpi-profiles

Plugin provides possibility to create several UI profiles for different screen resolutions and easily toggle between them.

MyBatisX

MybatisX plugin.

VisualVM Launcher

Launches VisualVM from within IDEA.

LivePlugin

This is a plugin for IntelliJ IDEs to write plugins at runtime without having to restart IDE.

Autoscroll Save

At last, a handy way to save your Autoscroll to/from Source settings :).