WinRawPrint
WinRawPrint - send RAW data to your printer
... need print prepared RAW printouts on printer, for example ZPL or EPSON-FX file.
Program accepts printouts taken by file path or STDIN.
Additionally, you can extend your own program by using DLL - WinRawPrintLib.dll.
It's written in C# / .NET 4.0.