http://www.openoffice.org/product/impress.html ,                               http://www.openoffice.org/product/calc.html ,                              http://www.openoffice.org/product/writer.html . Download Link : http://www.openoffice.org/download/index.html Installation Guide : http://www.openoffice.org/download/common/instructions.html 7-Zip 7-Zip   is a   free   and   open source   file archive r . 7-Zip operates with the   7z   archive format, but can read and write several