The best replacement for microsoft office is iwork.

The best alternatives to microsoft office are rated as following:
★★★★★  iwork
★★★★  open office
★★★★  works
★★★★  libreoffice
★★★★  microsoft works
★★★★  openoffice
★★★  google docs
★★★  kingsoft office
★★★  openoffice.org
★★  opengoo
★★  word
★  wordperfect
★  google drive
★  microsoft word
★  google apps
★  microsoft windows
★  quickoffice
  iwork 2013
  star office
  corel
  libre office
  corel wordperfect
  office
  pages
  sun staroffice
  apache openoffice
  appleworks
  lotus notes
  ilife
  iworks
  openoffice comparison
  iwork mac
  openoffice org
  openoffice software
  lotus smartsuite

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

Other search terms related to microsoft office and their ratings are:
★★★★★ chromebook
★★★ windows 7
★★ ipad
★★ resume builder
★ windows 8
You have in mind a companion for microsoft office and it is not yet here? Propose!



Google Trends

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