en.wikipedia.org/wiki/.xls Microsoft Excel up until 2007 version used a proprietary binary file format called Excel Binary File Format (.XLS) as its primary format. Excel 2007 uses Office Open XML as its primary file format, an XML-based format that followed after a previous XML-based format called "XML Spreadsheet ...
www.microsoft.com/en-us/download/details.aspx?id=10 Open, view, and print Excel workbooks, even if you don't have Excel installed. This download is a replacement for Excel Viewer 97 and all previous Excel Viewer versions.
file.org/extension/xls www.marketwatch.comXLS File - What is it and how do I open it?http://file.org/extension/xlsOpening XLS files. Did your computer fail to open a XLS file? We explain what XLS files are and recommend software that we know can open or convert your XLS files.
whatis.techtarget.com/fileformat/XLS-Worksheet-file... Worksheet file (Microsoft Excel) XLS is a file extension for a spreadsheet file format created by Microsoft for use with Microsoft Excel. XLS stands for eXceL Spreadsheet.
download.cnet.com/XLS-Converter/3000-2077_4-10401513.html From File Converters: XLS Converter can easily convert the excel file to TXT, HTML, CSV, MDB, DBF. The processing is as quickly as possible. MS Excel is doesn't required.
pcsupport.about.com/od/fileextensions/f/xls-file.htm Did you find an XLS file on your computer and wonder what program should open it? Maybe someone emailed you an XLS file but you're not sure how to use it.
windowdriver.com/extension/filecure.php?t202kw=XLS Missing software is generally the cause of not being able to open XLS files. This leads to the XLS file extensions having no associated programs to open it.
download.cnet.com/Free-XLS-Viewer/3000-2077_4-76084650.html From Free Picture Resizer: Some users do not have MS Excel installed on their devices. For all of them, this Free XLS User is the solution for opening, viewing and printing .xls files.
dictionary.reference.com/browse/xls Xls definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now! Thesaurus; Translate; Reference; Word of the Day; Blog; Slideshows; Apps by Dictionary; My Account; Log Out; Log In; follow Dictionary.com. Dictionary. Thesaurus;
reference.wolfram.com/mathematica/ref/format/XLS.html Wolfram Data Framework Semantic framework for real-world data. Wolfram Universal Deployment System Instant deployment across cloud, desktop, mobile, and more.
spreadsheets.about.com/od/xyz/g/090707_xls_def.htm .xls is a file extension used on computers running Microsoft Windows to identify files created in Microsoft Excel. A file extension is the group of letters that appear after the last period in a file name.
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xls.extensionfile.net File extension XLS is most commonly associated with Microsoft Excel, a popular spreadsheet application, and are used to store workbooks which can contain one or more individual spreadsheets.