Ninite Pro saves downloaded files in the NiniteDownloads folder to speed up installations on multiple PCs. Pro installers look for the NiniteDownloads folder next to them and use downloads from there when possible.
One of the best ways to take advantage of this feature is to keep Ninite Pro installers and the NiniteDownloads folder on a USB stick.
Although the NiniteDownloads folder greatly reduces bandwidth use, an internet connection is still required to make sure Ninite is installing the latest versions of software.
This folder can be safely deleted when a Ninite Pro installer is not running.
A NiniteDownloads folder can be shared by multiple Ninite Pro installers.
The downloads are not usable outside of Ninite.