The best replacement for spacing is edema.

The best alternatives to spacing are rated as following:
★★★★★  edema
★★★★  padding
★★★  mechanical spacing
★★★  massing
★★  kerning
★★  leading
★★  cell padding
★★  cellpadding
★  ascites
★  double spacing
★  cellspacing
★  plant spacing
  12 inch spacing

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

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



Google Trends

Scale is based on the average worldwide traffic of spacing in all years. Click on graph for more.
spacing
edema
padding