My Document:unzip,save,preview
use copy to function to collect files from other apps.
So you can manage all your files in one place.
Just make it a file center of whole system.
It can process zip file, support Rar/Zip/7z format.
When you receive zip files from other app,but it cant extract zip file, just open it by My Document.
MY Document support file provider extension, you can open files from other apps.
Any question please mail to me: [email protected].