Apache OpenOffice Calc - The all-purpose spreadsheet, Calc is the spreadsheet program you've always wanted. Newcomers find it intuitive and easy to learn; professional data miners and number crunchers will appreciate the comprehensive range of advanced functions.
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You can use our Online App Box and run Apache OpenOffice Calc online on any O.S.. for example: Mac, Windows, Android, iPhone, iPad...
Apache OpenOffice Calc's solver component allows solving optimization problems where the optimum value of a particular spreadsheet cell has to be calculated based on constraints provided in other cells.
Encourage collaborative working on spreadsheets with Calc's multiple users support. By sharing a spreadsheet other users can easily add their data to the spreadsheet. The spreadsheet owner can then easily integrate the new data with a few clicks. This collaboration feature helps avoid editing conflicts.
Save your spreadsheets in OpenDocument format, the new international standard for office documents. This XML based format means you're not tied in to Calc. You can access your spreadsheets from any OpenDocument compliant software.
Of course, you are free to use your old Microsoft Excel spreadsheets, or save your work in Excel format for sending to people who are still locked into Microsoft products. If all they want to see is your results, then use Portable Document Format (.pdf) - no need to buy any extra software. Since version 3.0, Calc has been able to read .xlsx files created with Microsoft Office 2007 or Microsoft Office 2008 for Mac OS X.