The best replacement for openoffice is microsoft office.

The best alternatives to openoffice are rated as following:
★★★★★  microsoft office
★★★★  libreoffice
★★★  neooffice
★★★  staroffice
★★  office
★★  word
★  google docs
★  ms office
★  abiword
★  microsoft word
★  excel
★  office 2007
★  koffice
★  microsoft office 2010
★  microsoft office 2013
  libreoffice mac
  libreoffice for mac
  symphony
  office 2010
  ms word
  microsoft office 2007
  iwork
  pages
  libreoffice 2013
  powerpoint
  libreoffice osx
  libreoffice which is better
  libre office
  ms office 2007
  apache openoffice
  microsoft office 2011
  microsoft office mac
  kingsoft office
  star office

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

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



Google Trends

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