LibreOffice, the successor to OpenOffice, is an open-source office suite that works as an alternative to Microsoft Office. It is a product of The Document Foundation's belief in non-restrictive shared/free software. The software is tested each day by a dedicated user community, and some members help to improve its development. The applications include Writer for word processing, Calc for spreadsheets, Impress for presentations, Draw for vector graphics, Base for databases, and Math for formula editing. Fortunately, LibreOffice is compatible with .doc, .xls, .ppt, and more while also being able to export in formats like PDF.