The best replacement for cropping is resizing.

The best alternatives to cropping are rated as following:
★★★★★  resizing
★★★★  teleconverter
★★★  digital zoom
★★  topping
★★  telephoto lens
★  resize
★  planting
  lst

Your alternative for cropping is not listed? Suggest!
Speaking about cropping, one probably shouldn't forget about gimp.

Other search terms related to cropping and their ratings are:
★★★★★ gimp
★★ iphoto
★ resizing
aperture
You have in mind a companion for cropping and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cropping in all years. Click on graph for more.
cropping
resizing
teleconverter