Android Open Source Project

Android is an open source operating system for mobile devices and a
corresponding open source project led by Google. This site and the
Android Open Source Project (AOSP) repository offer the information and
source code needed to create custom variants of the Android OS, port
devices and accessories to the Android platform, and ensure devices meet
the compatibility requirements that keep the Android ecosystem a healthy
and stable environment for millions of users.

As an open source project, Android’s goal is to avoid any central point
of failure in which one industry player can restrict or control the
innovations of any other player. To that end, Android is a full,
production-quality operating system for consumer products, complete with
customizable source code that can be ported to nearly any device and
public documentation that is available to everyone (in English at
source.android.com and in
Simplified Chinese at
source.android.google.cn).

Just as you can contribute code to
AOSP, you can also contribute to AOSP documentation—and we
want your input! Android’s flexibility and ever-changing codebase means
this site needs your feedback to keep content fresh, accurate, and
relevant to Android implementors. We encourage you to check the
changelog
for details on recent AOSP updates and to report bugs or offer
suggestions using the
Site
Feedback at the bottom of every page (or by visiting
g.co/androidsourceissue).