One of the leading open-source office suites.  Available in many languages and for multiple platforms, use it for all your office needs.  Open Office can read and write files from other common office software packages.  Open Office includes five applications: Writer for word processing, Calc for spreadsheets, Impress for multimedia  presentations, Draw for graphics and Base for databases.  All are available in a single package - one installation program is all that is needed.  It can be downloaded and used completely free for any purpose.