glabels
There are 3 repositories under glabels topic.
jimevins/glabels-qt
gLabels Label Designer (Qt/C++)
michaelplews/gdymo
gdymo - a simple wrapper for ppl and gLabels to create address labels for printing from the command line
DM2PF/QSL_QR_Label
Process QSOs to data that can be printed onto QSL labels for DARC's QSL card processing system.