Welcome to the Android Open Source Project!

Android is an open-source software stack for a wide range of mobile devices and a corresponding open-source project led by Google. Here you can find the information and source code you need to learn more about the Android platform. From there you can create custom variants of the Android software stack, port devices and accessories to the Android platform, and ensure your devices are compatible with the Android compatibility definition.

Updates

Source Code Available for Android

Android is an open-source software stack for a wide array of mobile devices with different form factors. Android Partner icon We created Android in response to our own experiences launching mobile apps. We wanted to make sure there was no central point of failure so no industry player can restrict or control the innovations of any other. That's why we created Android and made its source code open.

Compatibility Definition for Android

Android's purpose is to establish an open platform for developers to build innovative apps. The Android Compatibility program defines the technical details of the Android platform and provides tools for device manufacturers to ensure developers' apps run on a variety of devices.

Getting Started

Explore the Source

Get the complete Android platform and modify and build it to suit your needs. You can also contribute to the Open Source Project to make your changes available to everyone else in the Android ecosystem.

Port Android to Devices

Port the latest Android platform and create compelling devices that your customers want.

Build Accessories

Sometimes, a device can't do it all. Tap into Android's open accessory standard and build accessories to complement the wide variety of Android-powered devices.

Get Compatible

Being Android-compatible lets you offer custom features but still give users and developers a consistent and standard experience across all Android-powered devices. Android provides guidance and a test suite to verify your Android compatibility.