Blitware FAQ: I've downloaded some of these drivers and I'm looking at the “Download” screen – what is the difference between a driver in this list that is “Complete” and one that's “Installed”? (Driver Fetch)
The status tags "Compete" and "Installed" simply show whether you have attempted to install a driver or not. After scanning and downloading drivers they will all appear as "Complete" when the download finishes entirely. As soon as you click on the Install button next to a driver the tag changes from "Complete" to "Installed" to indicate which in the list you've already attempted.
Driver Fetch
File Helper
PC Medkit
Undeleter
Undeleter CL