The best replacement for icf is sip.

The best alternatives to icf are rated as following:
★★★★★  sip
★★★  ecf
★  concrete block
★  iac
★  snf
★  stick frame
★  sip construction
★  spray foam
★  cmu
★  superior walls
★  concrete walls
★  stronglifts
★  poured walls
★  2x6
  poured concrete
  double wall
  stick built
  eifs
  bushwackers
  hcs
  spray foam insulation
  iyr
  sips
  poured foundation
  wood frame
  precast
  vnq

Your alternative for icf is not listed? Suggest!
Speaking about icf, one probably shouldn't forget about steel framing.

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



Google Trends

Scale is based on the average worldwide traffic of icf in all years. Click on graph for more.
icf
sip
ecf