How do these open-source suites differ from Microsoft Office? Should your nonprofit consider one of them? To help you decide, we compared key features of the 2016 version of Microsoft's productivity suite to Apache OpenOffice 4.1 and LibreOffice 5.1.īoth open-source suites offer tools with the same names - Writer (word processing), Calc (spreadsheets), and Impress (slide presentations) - to compete with Microsoft's equivalent products - Word, Excel, and PowerPoint. However, open-source options such as Apache OpenOffice and the Document Foundation's LibreOffice have emerged - and many users feel they are as good or better than Office. Microsoft Office continues to dominate the productivity software marketplace.