DURANGO FTP (DEPRECIATED)
It`s now recommended to use Kodi instead, Kodi can transfer files over a local network to both Internal or USB storage using SMB or UPnP, you can also transfer files from USB to Internal Storage
LAUNCHPASS
Is a customizable Frontend/Game Library that allows you to launch ROMs for Dolphin, PPSSPP, Retrix Gold, RetroArch, XBSX2, Ducktation and Xenia Canary all from one app.
It`s recommended to use an Image instead of a Video for the Game Details Page Background.
*USB NEEDED!!*
MOONLIGHT
Allows you to stream your PC games to Xbox! This app is also available in retail mode Here
RETROPASS
Is a simple Frontend/Game Library that allows you to launch ROMs for Dolphin, PPSSPP, Retrix Gold, RetroArch, XBSX2, Duckstation and Xenia Canary all from one app. The UI is similar to that of the Game Pass section of Xbox for a familiar feel.
*USB NEEDED!!*
Discord
A comprehensive port of the discord app with file input (pictures only) and download support.
XB Cloud Gaming
XB Cloud Gaming Has a PIP Mode, can be used as a browser, can use Xb Party Chat, as well as few more things.
*Set as a APP!!*
Oberon
Remote input for Xbox consoles, use any controller with your Xbox, this app is also available in retail mode Here