A hot folder application prints a file by adding it to the hot folder on your printing PC. The whole process of adding and syncing the files is done by our Dropbox integration.
A short list of hot folder utilities depending on your system and printer setup:
DNP's Hot Folder Print Utility is compatible with Windows and Mac and is specifically designed for DNP printers.
Breeze Hotfolder Prints is a neutral hot folder application primarily for Windows PC's.