Portable OpenOffice.org
From Apache OpenOffice Wiki
Portable OpenOffice.org is the complete OpenOffice.org office suite packaged as a portable application. It can be run entirely from a removable drive (iPod, USB thumbdrive, etc) with no installation. For further information look at the project's home page or SourceForge. Note:
- Currently released binaries are for Windows only
- It is possible to install language packs to existing Portable OO.o directory with usual langpacks installation procedure