Apps with 'Printer Emulation' feature

doPDF is a free PDF converter for both personal and commercial use. Using doPDF you can create PDF files by selecting the "Print" command from virtually any application.

z/Scope is a multi-protocol, multi-host terminal emulator that provides access to multiple terminal-based applications in a way that is familiar to every user, using a modern tabbed interface.

PaperCut Print Logger is a free program to log, audit and track printing on Windows systems and print servers.