SSUITE is free office productivity software that can be downloaded and used on any Windows system. Software includes: Desktop Office Suite (word processing, spreadsheets), money managers, invoice software, web browser, image editing, email, utilities, and much more.
There is some great software here, all free, that can be of great use in education.
Check out the full list of software here: http://www.ssuitesoft.com/software.htm
Check it out: http://www.ssuitesoft.com
Free Alternatives to Microsoft Office
Google for Education Resources - includes Google Docs, free online office software
LibreOffice - great free office suite - free, easy to use