With this set of shapes you can design desktop apps for Windows 8 and 10 following the Universal Windows Platform (UWP) design guidelines.
: A curated list and document focused on preserving the "best" applications across Windows 8.1 and 10 Mobile platforms.
: A dedicated repository for Windows Phone 8.1 XAP files. How to Install Archived XAP Files windows phone xap archive extra quality
XAP is the primary file format used to distribute and install software on Windows Phone 7, 8, and 8.1. Architecturally, a XAP file is a compressed ZIP archive containing the application's executable code, assets, and metadata. While later Windows 10 Mobile versions transitioned to the .appx format, XAP remains the legacy standard for many of the platform's most iconic apps. Finding "Extra Quality" XAP Archives : A curated list and document focused on
Installing these files requires more than just copying them to a phone; modern users must "sideload" them using specific developer tools. Files for Windows 10 Mobile Apps - Internet Archive Architecturally, a XAP file is a compressed ZIP