The best replacement for nautilus is frontier.

The best alternatives to nautilus are rated as following:
★★★★★  frontier
★★★  free weights
★★★  britax frontier
★★  kayfun
★★  sejuani
★★  bowflex
★★  thunar
★★  aerotank
★★  nautilus elite
★★  dolphin
★  zac
★  konqueror
★  nemo
★  aquanaut
★  frontier 90
★  cybex
★  rammus
★  maokai
★  argos
★  britax frontier 85
★  thresh
★  royal oak
★  windows explorer
★  volibear
★  graco argos
★  protank 2
★  frontier car seat
  britax marathon
  leona
  nautilus elementary
  britax boulevard
  ammonite
  hoist
  life fitness
  select comfort
  evenflo symphony
  galvan
  precor
  regent
  tibor
  evenflo symphony 65

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

Other search terms related to nautilus and their ratings are:
★★★★★ thunar
★★★★ gnome
★★★★ xfce
★★★ lxde
★★ nemo
★ pcmanfm
gnome session
You have in mind a companion for nautilus and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of nautilus in all years. Click on graph for more.
nautilus
frontier
free weights