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Android
Open Source Project
Use the Android operating system to power your device.
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Docs
More
Android Code Search
What's new?
Release notes
Latest security bulletins
Latest Compatibility Definition Document (CDD)
Site updates
Getting Started
About
Start
Download
Builds
Test
Create
Contribute
Community
Tools, build, and related reference
Security
Overview
Bulletins
Features
Testing
Best Practices
Core Topics
Architecture
Audio
Camera
Connectivity
Data
Display
Fonts
Graphics
Interaction
Media
Performance
Permissions
Power
Runtime
Settings
Storage
Tests
Updates
Virtualization
Compatibility
Compatibility Definition Document (CDD)
Compatibility Test Suite (CTS)
Android Devices
Cuttlefish
Enterprise
TV
Automotive
Overview
Software Defined Vehicle
In-vehicle Infotainment
Release Details
Reference
HIDL
HAL
Trade Federation
Security Test Suite
Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, use android-latest-release. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP.
AOSP
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Featured
Android 17 is available!
Learn about the features added in Android 17 and how to implement them on your devices.
Read more
Featured
Feature launch flags
Android feature launch flags ensure that the AOSP development branch is stable for everyone. Contributors to AOSP can use feature launch flags to make sure only tested code is executed.
Read more
Learn about AOSP
Read about the Android Open Source Project (AOSP) and learn how to develop, customize, and test your devices.
Getting started
Setup
Learn how to set up your environment, download the AOSP source, build Android, and make contributions.
Security
Security
Find out how Android incorporates industry-leading security features to keep the Android platform and ecosystem safe.
Core topics
Android fundamentals
From the basic building blocks of an Android device to the more intricate advanced features, learn about all the ways you can customize the Android OS.
Compatibility
Compatibility
Ensure your users have a coherent experience as they use your device alongside other Android devices in the ecosystem.
Automotive
Automotive
Learn how to develop and customize the Android Automotive platform, which runs directly on in-vehicle hardware.
Devices
Android devices
Read about creating configurable virtual Android devices, managing devices on a corporate network, and delivering live content to devices through Android TV.
Explore more
Security bulletins
Help protect your device by checking the latest Android Security Bulletins. Also see the Android Automotive, Chromecast, Wear OS, Pixel, and Pixel Watch bulletins.
Android development
Learn how to set up your environment, download the source, and start contributing to AOSP through this tutorial.
Architecture
Learn how the pieces fit together, from the kernel to the HALs to updatable system components.
Connectivity
Make sure your devices work together and are connected through Bluetooth, NFC, Wi-Fi, and telephony.
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