Crossover Office is a fork of wine, aimed at users of Microsoft Office, and associated programs.
Crossover Office allows you to use these windows-based programs under linux.
See http://www.codeweavers.com/ for more info.
Crossover Office on Arch via AUR
To install Crossover Office just install one of the packages with your aur helper:
Crossover Standard Edition:
Crossover Professional Edition: