The best replacement for open office is microsoft office.

The best alternatives to open office are rated as following:
★★★★★  microsoft office
★★★  libre office
★★  star office
★★  word
★★  google docs
★★  ms office
★  office 2007
★  neooffice
★  office
★  microsoft word
★  iwork
★  libre
  apache openoffice
  kingsoft
  microsoft office 2007
  lotus symphony
  apache open office
  microsoft publisher
  abiword
  office 2010
  easy office
  ms office 2007
  google apps
  neo office
  koffice

Your alternative for open office is not listed? Suggest!
Speaking about open office, one probably shouldn't forget about docx.

Other search terms related to open office and their ratings are:
★★★★★ docx
★★ endnote
You have in mind a companion for open office and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of open office in all years. Click on graph for more.
open office
microsoft office
libre office