The best replacement for realflight is phoenix.

The best alternatives to realflight are rated as following:
★★★★★  phoenix
★★★★  aerofly
★★★  clearview
★★  phoenix rc
★★  phoenix simulator
★★  phoenix flight sim
★  fs one
★  reflex xtr
★  reflex
  aerofly 5
  fsone
  phoenix sim

Your alternative for realflight is not listed? Suggest!
Speaking about realflight, one probably shouldn't forget about dx6i.

Other search terms related to realflight and their ratings are:
★★★★★ dx6i
★★★ turnigy 9x
★★★ dx7
★★ dx8
★ dx5e
★ esky
futaba
You have in mind a companion for realflight and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of realflight in all years. Click on graph for more.
realflight
phoenix
aerofly