XLS is the most popular and common format for creating and editing spreadsheets. It takes its name from Microsoft Excel Spreadsheet, is created using the Microsoft Excel system utility. Document data is stored in certain table cells that have their own address. In cells of XLS files, not only fixed data can be located, but also formulas that allow you to relate the content of information in different cells. Like text formats, XLS makes it possible to format the contents of cells - font, font style, color, text alignment. Files of this format can also be launched using Google Drive.
ODS is a spreadsheet received using StarOffice, OpenOffice, and other office suite programs. This table is created in the Calc application, and it is part of the free Apache OpenOffice office suite. An ODS file (Open Document Spreadsheet) stores all the data in cells, which are rows and columns. He is able to additionally have text, graphic elements, diagrams. Note that the ODS format is not always tables. It also happens that this is a mailbox or archive for electronic messages. Then it is created or saved in Outlook Express. The file format is based on OASIS, which is an open document format for office applications. All file data is in the form of XML. The OpenDocument standard can be used by everyone. And there are no restrictions. The ODS format is unlimited for any office application. Its source code is open, that is, it is a good alternative to Microsoft's proprietary format (.xls). Those who choose Microsoft Office will not need conversions. Excel in the 2007 version, which includes the second service pack, is able to support this format. To adapt such a document with an earlier version of the spreadsheet editor, the Sun ODF plug-in is installed.