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. This site offers the information and source code you need to create custom variants of the Android stack, port devices and accessories to the Android platform, and ensure your devices meet compatibility requirements.

Android 6.0 Updates Available — see details below

What's New

Doze and App Standby

New battery-saving features Doze and App Standby are described in Power Management while the remaining Power section has been revised.


An entirely new Authentication section describes the Fingerprint, Gatekeeper, and Keymaster interfaces in detail, including a list of Keymaster features and an implementer’s reference.

Adoptable Storage

The Storage section has been revised to introduce adoptable storage that can hold app data and distinguish between it and traditional storage.


Instructions now exist for configuring runtime permissions, visual voicemail, and Android’s new file system. And carriers get custom configuration.


Information on the Jack (Java Android Compiler Kit) default toolchain in Android 6.0 is available, as well as instructions for debugging garbage collection in ART.


The Media section now contains descriptions of media resource manager dependencies for OEMs and SoC vendors.

Bluetooth Stylus

The Accessories section now explains how to implement a Bluetooth Stylus.

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 Android Open Source Project (AOSP) repository to make your changes available to everyone else in the Android ecosystem.

Android framework summary

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.

Help this Site

Use the Send Feedback button at the bottom of any page to request improvements to the content or identify errors. In addition, source.android.com is maintained in the Android Open Source Project. See the docs/source.android.com project log in AOSP for the complete list of changes to this site. Contribute your own updates to that same project and help maintain source.android.com.