Keep in mind that this open-sourced office suite comes with very detailed online documentation in case you need some help. In order to be proper competition, this software bundles six different modules – Writer ( word processing), Calc ( spreadsheets), Impress ( presentation creating), Draw (vector graphics editing), Math ( formulas managing) and Base (database management). Like its rivals, LibreOffice comes with an extensive supported language list, more than 30. In addition, it is available as a portable version as well in case you don't want to bother with installation. LibreOffice is a cross-platform open source software, which can be installed on any Windows, Mac or Linux-powered PC. It bundles separate application for word processing, spreadsheet creation and editing, slide-shows, diagrams, database maintenance and math formulas in one. LibreOffice 4.4.0 is a complete free office suite offering you no less than the paid office suites.

LibreOffice seems to be one of the best free and open source office suites, designed to replace MS Office.

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