Label Nation - LabelNation is a command-line program for making labels: address labels, business cards, or...
Air Sharing - Air Sharing lets you bring your documents with you — without bringing your computer.
Orion Label Maker - Orion Label Maker is the all-in-one solution for designing and printing labels right from your Mac.
QZ Tray - Print raw (ZPL, ESC/P, FGL), HTML, PDF as well as communicate with USB, HID, and serial devices...
labelgrid - labelgrid - Open source label software using HTML, CSS and Javascript.
CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.