DOCX and XLXS are Microsoft Office file formats for Word documents and Excel sheets respectively introduced in Microsoft Office 2007. Since all documents created and saved using Microsoft Office 2007 and 2010 will save in these two newer formats by default, unless you change them which most users do not, plenty of DOCX and XLXS files are exchanged everyday between users.
Now, you might not have Microsoft Office installed or haven’t upgraded from Office 2003, because honestly, Microsoft Office is expensive and there are many cheaper and free alternatives. But that doesn’t stop people from sending you DOCX and XLXS files.
The most obvious candidate for opening these files is OpenOffice. But OpenOffice is a huge download. If you want something smaller that opens in a snap, take a look at these free viewers.
SoftMaker has recently released two free applications that can open, view and print DOCX and XLXS files. These are TextMaker Viewer 2010 and PlanMaker Viewer 2010.
Both handles an enormous number of formats including:
.docx, .docm, .dotx, .dotm, .doc, .dot, (Microsoft Word)
.tmd, .tmv (TextMaker),
.odt, .ott, (OpenDocument),
.sxw (OpenOffice.org/StarOffice ),
.psw Pocket Word (Pocket PC)
.pwd Pocket Word (Handheld PC).
.xlsx, .xlsm,.xltx, .xltm, .xlx, xlt (Microsoft Excel)
.pmd, .pmv, .pmw (PlanMaker)
.slk SYLK files
.dbf dBASE files
Epingsoft DocX Viewer is another free DOCX viewer. It’s portable, light-weight (only 600KB in size), fast and accurately renders the document.
For viewing XLXS files, you can try Bytescout XLS Viewer, which apart from opening Microsoft Excel 2007/2010 files will also open ODS (Open Office) files and export them into HTML.
If you don’t want to download any, then simply upload your documents to Google Docs. It handles DOCX and XLXS pretty well.
Related: How to open Microsoft Office 2007 files using Office 2000, XP or 2003
is it xlsx or xlxs?