If you have a Windows Phone 8 device and a microSD card slot, you can install "legitimate" XAP files (apps that were free or that you purchased) without hacking.
Preserving the Tile: A Deep Dive into Windows Phone XAP Archives windows phone xap archive full
: A popular third-party tool that supports installing multiple XAP files at once , which is much faster than the official single-file deployer. If you have a Windows Phone 8 device
A random sampling of 5,000 XAP files was tested using the XapSignTool and XapExtract utilities. windows phone xap archive full
: Community members on platforms like Reddit and Telegram organized to create repositories of decrypted XAP and APPX files.