Absolute gravimeters based on falling corner-cube reflectors have been a cornerstone of geophysical research and exploration for decades. The first commercial quantum gravimeters are now available on the market, largely due to advances in lasers and ultra-high vacuum technologies. These instruments use matter-wave interferometry with an ultracold gas of neutral atoms to measure gravity down to the micro-Gal level. In this talk, I will give an overview of their functionality and their key advantages over classical technologies. I will also discuss progress toward building two new quantum gravimeters at the University of New Brunswick for applications in geophysics and geodesy.