Boringdroid
boringdroid is an AOSP extending project based on AOSP(9.0 - 14.0), and it provides the patch set to use multi-window in AOSP default.
Install / Use
/learn @boringdroid/BoringdroidREADME
boringdroid

Introduction
Boringdroid is an AOSP extending project based on AOSP(9.0 - 14.0), and it provides a minimum patchset to use multi-window in AOSP by default. The patch set is boring, and most of problems the patchset resolves look like they are disappearing on master branch, so the project is boring, that the reason I calls it Boringdroid.
Preview

The boringdroid adds a minimize button for each window, and provides a smooth resizing experience. Boringdroid also provides an enhanced taskbar to show running task list and installed app list. The next steps for Boringdroid will be to provide system tray functionalities in the taskbar.
Download
mkdir -p boringdroid/14
cd boringdroid/14
repo init -u https://github.com/boringdroid/manifest.git -b boringdroid-14.0.0
repo sync -c -d --no-tags
Build
source build/envsetup.sh
lunch boringdroid_x86_64-userdebug
m
The boringdroid now runs in emulator, which is convenient to debug and test modification. So the product boringdroid_x86_64 bases on the goldfish. After building, we can execute emulator to start emulator.
From boringdroid-13.0.0, if you encounter boot image verified error, you can try use m -j8 or other proper thread number to reduce the thread number for building to fix it.
Contributing
See CONTRIBUTING
Architecture
See ARCHITECTURE
Android-x86 porting
The Android-x86 has accepted ported patches for Android-x86 to their code repositories.
A BlissLabs Project
The boringdroid is a BlissLabs Project.
Special thanks
Thanks Roger Truttmann of BlissLabs to help design logo.
License
The modified AOSP project uses the origin license. And the boringdroid created projects will uses its custom license on its project.
Security Score
Audited on Feb 6, 2026
