The best replacement for indent is space between paragraphs.

The best alternatives to indent are rated as following:
★★★★★  space between paragraphs
★★★★★  tab
★★★★★  bfp
★★★★  block paragraphs
★★★  leave a line
★★★  not to indent
★★  astyle
★★  dent
★★  double space
★  space paragraphs
★  space paragraph
★  hanging indent
  right indent
  not indent

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

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



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indent
space between paragraphs
tab