Google Drive has a series of good widgets rather than just one knockout, but if you combine these together you can really ramp up your tablet productivity. One widget lets you put one or several direct links to a specific folder. Or if you like to organize photos into specific folders, use the snapshot widget to launch the camera, which will then place that image into the folder you’ve preselected.
The long bar also puts the commands for uploading, adding a picture, or creating a new Doc, Sheet, or Slide on the home screen.
Google Drive (Free)