The preservation community is scattered across various platforms. The most reliable "Windows Phone XAP archives" are currently found on:
The Golden Era of Windows Phone: A Deep Dive into the XAP Archive windows phone xap archive
As Microsoft shuttered the Windows Phone Store, thousands of unique applications became inaccessible. Many of these apps were never ported to other platforms, meaning they faced permanent digital extinction. The creation of XAP archives serves several critical purposes: windows phone xap archive