The best replacement for acs is ctr.

The best alternatives to acs are rated as following:
★★★★★  ctr
★★★★★  str
★★★★  cad
★★★★  acs-l
★★★  ubr
★★★  cps
★★★  emod
★★★  ise
★★  gci
★★  leadscope
★★  sopmod
★★  usp
★  usp grade
★  census
★  raffles
★  acs l
★  ncoa
★  chd
  ias
  str stock
  microsoft nps
  microsoft ias
  nps
  ctr stock
  nstemi
  nac

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

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



Google Trends

Scale is based on the average worldwide traffic of acs in all years. Click on graph for more.
acs
ctr
str