gLabels - gLabels is a program for creating labels and business cards for the GNOME desktop environment.
NiceLabel - NiceLabel is a label design and label management systems that help companies of all sizes to enhance the quality, efficiency and speed of their labelling while reducing cost.
Label Nation - LabelNation is a command-line program for making labels: address labels, business cards, or...
QZ Tray - Print raw (ZPL, ESC/P, FGL), HTML, PDF as well as communicate with USB, HID, and serial devices...
Cardpeek - Cardpeek is a Linux/Windows/Mac OS X tool to read the contents of ISO7816 smart cards.
ZebraDesigner - ZebraDesigner is another barcode label software that offers all the basic features that you really need to create a barcode label.