APPX is the premier development and runtime environment for... | APPX
https://www.appx.com/
What is APPX? The APPX Vision. APPX Consulting Services. Programming and Network Services. System Review and Tuning.
Appx Module | Microsoft Docs
https://docs.microsoft.com/en-us/powershell/module/appx/?view=win10-ps
The Windows PowerShell cmdlets for AppX are designed to streamline the administration of MSIX or AppX package management.
how to install appx file in windows 8.1 - YouTube
https://www.youtube.com/watch?v=7RHIVKAu-fQ
How to Install APPX Package Files (.appx) in Older or New Version of Windows. Windows Store - Instalar aplicaciones appx o appxbundle desde PowerShell.
Universal Windows Platform apps - Wikipedia
https://en.wikipedia.org/wiki/Universal_Windows_Platform_apps
APPX is the file format used to distribute and install apps on Windows 8.x and 10, Windows Phone 8.1, Windows 10 Mobile, Xbox One, Hololens, and Windows 10 IoT Core.[32] Unlike legacy desktop apps...
How to Install .appx Files in Windows 10 - Make Tech Easier
https://www.maketecheasier.com/install-appx-files-windows-10/
However, if you want to you can directly download .appx files from a developer site and sideload them in your system. Here is how to manually install .appx files in Windows 10.