LibreOffice

LibreOffice is a powerful office suite. Its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity. LibreOffice includes several applications that make it the most powerful Free and Open Source office suite on the market: Writer (word processing), Calc (spreadsheets), Impress (presentations), Draw (vector graphics and flowcharts), Base (databases), and Math (formula editing).

LibreOffice supports opening and saving into a wide variety of formats, so you can easily share documents with users of other popular office suites without worrying about compatibility.