Printer Pro - Print attachments, receipts, documents, web pages from your iPad and iPhone.
Print - Developers of application solutions for the iPad & iPhone. 'Printing on the iPhone: “There's an App for that” - Print & Share' as featured in Apple's “Office” iPhone commercial
Print n Share - “Print n Share” for the iPad, iPhone & iPod Touch is the best printing and file sharing app.
ePrint - If you have the right printer, “ePrint” will let you print directly from your iPhone or iPod touch.
QZ Tray - Print raw (ZPL, ESC/P, FGL), HTML, PDF as well as communicate with USB, HID, and serial devices...
Photo Calendar Studio - Photo Calendar Studio is a program to design and print calendars with your own photos.