GolfLogix GPS + Putt Line alternatives and competitors

As the pioneers of Golf GPS, for the past 20 years, over 5 million golfers all around the world continually trust GolfLogix for exact GPS distances, full-color 3D course maps, 4-player scoring, pro-level stats, handicap tracking and discounted tee times. 
 GolfLogix has recently invested heavily in mapping golf course greens to centimeter accuracy.