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 Arch64
To install Crossover office on Arch64, you need some 32bit emulation libraries (All of these may not be required anymore, I just installed all of them):
pacman -S linux32 lib32-gcc lib32-glibc lib32-libxi lib32-zlib lib32-libsm
Set executable flag and login as root or use the superuser command (the Crossover install script doesn't like to be run in sudo):
chmod +x install-crossover-pro-9.0.0.sh && su
All that is left is to run the installer: