I'm trying to understand the appxmanifest file for APPX packages better. I noticed it has an <Applications> tag followed by a single <Application> tag for every example I've seen. It would appear though that multiple "applications" can be included in the Manifest. What would this actually even mean though? Is this actually possible or was Microsoft just thinking about forward compatibility when designing the AppxManifest schema?
The manifest does define this as a possibility, and with hand editing, it is possible to do this.
However, you won't pass store certification for this I believe.
.appxbundle package is the likely solution to your question.
http://msdn.microsoft.com/en-us/library/windows/apps/bg182885.aspx#two
来源：https://stackoverflow.com/questions/12604663/can-an-appx-windows-store-package-contain-multiple-applications