Repulsorlift. Small craft like Luke's landspeeder, the N-1 fighter, and the B-wing fighter have no landing gear at all. Even the repulsorlift on Luke's junker on a backwater planet is tacitly considered so reliable that he doesn't even have an emergency skid for it to rest on at home. And the implication is it's running even with the power off.
Queen Amidala's ship had those teeny little pointy tricycle landing legs, the Millennium Falcon has more substantial landing legs, but three isn't stable enough, and people who have built largely hollow (definitely no engines or metal hull) full-scale replicas have had to reinforce the heck out of both the build surface and all five (or seven, depending on how you count the doubled rear ones) landing legs just to hold the darn thing up. So I presume freighters also rely largely on repulsorlift, with landing legs mostly for stability and backup.
I can't remember -- does the Ghost even have landing gear?