Other than Microsoft Office is there any other Software Package available for Windows that is completely free and can also open .docx, .pptx, .xlsx etc... file formats?
The two main options are:
- OpenOffice, previously from Sun/Oracle and now under the wings of the Apache Fundation,
- and LibreOffice, the main fork from the previous one.
Both are similar and can open the Microsoft Office suite documents with most, but not all unfortunately, functionality and layout preserved.
Other options include: