Did you know Google now provides free, online, Microsoft Office compatible, word processor and spreadsheet? It's called Google Apps.

5 things you probably didn't know you could do in Google Docs & Spreadsheets

Or maybe better still: Zoho. Unlike Google Apps and most other would-be Office killers, the Zoho suite has all of the applications you expect: a word processor, a spreadsheet program, a presentation package, e-mail, and a calendar. There are also Zoho modules for databases and managing projects.