DXKeeper, the logging application in DXLab, generates QSL cards -- 4 to an 8.5 x 11" sheet. As DXLab is focused on support for DXing, the cards are utilitarian; each card can confirm up to 10 QSOs. You can see an example in
http://www.qsl.net/dxkeeper .
DXKeeper is free, and available via
www.qsl.net/dxlab .
73,
Dave, AA6YQ