The best replacement for fsbo is realtor.

The best alternatives to fsbo are rated as following:
★★★★★  realtor
★★★★  agent
★★★  real estate agent
★★  realtor statistics
★  for sale by owner
★  forsalebyowner
  listing
  realtor stats
  using realtor
  use a realtor
  realtors
  using a realtor

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

Other search terms related to fsbo and their ratings are:
★★★★★ mls
★★★★ mls listing
★★★ buyers agent
You have in mind a companion for fsbo and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of fsbo in all years. Click on graph for more.
fsbo
realtor
agent