LibreOffice 4 from The Document Foundation is a free open source office suite that provides file compatibility with Microsoft Office, as well as many other popular office software formats.
LibreOffice consists of six core applications: Writer (word processor), Calc (spreadsheet), Impress (presentations), Base (database), Math (equation editor), and Draw (diagraming and drawing). All of the apps provide the capabilities typically found in commercial software suites.
But wait; there's more. LibreOffice 4 includes collaboration and content management systems that use the CMIS standard. This not only allows you to collaborate with others, but also provides easy access to documents stored online. If you're a presentation impresario, there are remote control apps for Impress that work with Android devices (Mac support for remotes is coming soon).
If you want an office suite that can take a bite out of your work, but not out of your budget, LibreOffice deserves a look.
LibreOffice is free.
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