Android Studio Early Access Preview released

A new Android development environment called Android Studio, based on IntelliJ IDEA, is now available as an early access preview. Similar to Eclipse with the ADT Plugin, Android Studio provides integrated Android developer tools for development and debugging.

Android Developer Tools Bundle

If you're a new Android developer, download the ADT (Android Developer Tools) Bundle to quickly start developing apps. It includes the essential Android SDK components and a version of the Eclipse IDE with built-in ADT to streamline your Android app development.