Printer Pro - Print attachments, receipts, documents, web pages from your iPad and iPhone.
Stack Overflow - Community-based Q&A part of the Stack Exchange platform.
CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.
The Answer Bank - The Answer Bank is the UK’s leading question-and-answer site.
QZ Tray - Print raw (ZPL, ESC/P, FGL), HTML, PDF as well as communicate with USB, HID, and serial devices...
Askalot - Askalot is a next generation CQA (Community Question and Answer) system.