Edgar,

XZip (http://xstandard.com/en/documentation/xzip/) can be used from/within a webapp.exe. However AFAIK the project is terminated and there will not be 64 bit version. Not sure whether that the source code found at codeproject (https://www.codeproject.com/Articles...-to-your-app-w) is the same but it might be possible to make a 64 bit OCX or DLL from this. That won't be a task for me though.