There are many free office suites on the web today but most are not compatible with the most common operating systems. Libre Office is a free and open source office suite, developed by The Document Foundation. It was stemmed from OpenOffice.org in 2010. It is designed to be compatible with major office suites, mainly Microsoft Office. Since most of the world uses Microsoft Office, sharing documents should not be an issue. With this suite you get 6 applications that are very similar and familiar to that of Microsoft Office.