ezeep - ezeep provides managed cloud printing solutions for educational institutes and SMB's.
CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.
directprint.io - Printer management for Chromebooks & Windows.
Printer Pro - Print attachments, receipts, documents, web pages from your iPad and iPhone.
PrinterLogic - PrinterLogic is an enterprise print management software.
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