OpenOffice can open all of its counterpart's file formats and runs a smaller module. Near-complete tool set: Apache OpenOffice's biggest selling point is that it can almost completely replace Microsoft Office.
While bugs are bound to be an issue, this is an all-around powerful, accessible tool set for anyone who needs productivity software. With open-source development, features constantly change and improve, which makes OpenOffice in some ways more flexible than its paid counterparts. Apache OpenOffice is a free office-suite alternative to Microsoft Office or Apple's iWork Suite.
