The best replacement for lat long is utm.

The best alternatives to lat long are rated as following:
★★★★★  utm
★★★★★  long lat
★★★★  northing easting
★★★★  decimal degrees
★★  x y
★  utm coordinates

Your alternative for lat long is not listed? Suggest!
Speaking about lat long, one probably shouldn't forget about google maps.

Other search terms related to lat long and their ratings are:
★★★★★ google maps
You have in mind a companion for lat long and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of lat long in all years. Click on graph for more.
lat long
utm
long lat