Download your free copy of Libreoffice.

LibreOffice is a powerful office suite; its clean interface and powerful tools let you unleash your creativity and grow your productivity. LibreOffice embeds several applications that make it the most powerful Free & Open Source Office suite on the market: Writer, the word processor, Calc, the spreadsheet application, Impress, the presentation engine, Draw, our drawing and flowcharting application, Base, our database and database frontend, and Math for editing mathematics.

Devon Tech Services recommends this software if you need to open Microsoft Word, Excel or PowerPoint files. This software will work with those files and can edit and create them much like Microsoft Office, but completely free.