Spreadsheets
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OpenOfficeCalc
OpenOfficeCalc - Open Source Spreadsheets
Calc is similar to Microsoft Excel, with a roughly equivalent range of features. Calc is capable of opening and saving most spreadsheets in Microsoft Excel file format. It provides a number of features not present in Excel, including a system that automatically defines series for graphing based on the layout of the user's data. Calc is also capable of writing spreadsheets directly as PDF files.
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LibreOfficeCalc
LibreOfficeCalc - Open Source Spreadsheets
LibreOffice Calc is the spreadsheet component of the LibreOffice software package. Since forking from OpenOffice LibreOffice Calc has undergone a massive re-work of external reference handling to fix a large number of defects in formula calculations involving external references, and to boost data caching performance especially when referencing large data ranges.
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Gnumeric
Gnumeric - Open Source Spreadsheets
Gnumeric is a spreadsheet program that is part of the GNOME Software Desktop Project. Gnumeric is distributed as software under the GNU GPL license; it is intended to replace proprietary and other spreadsheet programs such as Microsoft Excel. Gnumeric has the ability to import and export data in several file formats, including CSV, Microsoft Excel , Microsoft Works spreadsheets (*.wks), HTML, LaTeX, Lotus 1-2-3, OpenDocument and Quattro Pro; its native format is the Gnumeric file format (.gnm or .gnumeric), an XML file compressed with gzip.
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Gnumeric's accuracy has helped it to establish a niche for statistical analysis and other scientific tasks. -
WikiCalc
WikiCalc - Open Source Spreadsheets
wikiCalc is a web application, created by Dan Bricklin, that allows for the creation and editing of spreadsheets through a wiki-style user-editable interface. It is currently released as version 1.0 for use on Windows, Mac, Linux/Unix, and other platforms that can run the Perl language.
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Kspread
KSpread - Open Source Spreadsheets
KSpread is a fully-featured calculation and spreadsheet tool. Use it to quickly create and calculate various business-related spreadsheets, such as income and expenditure, employee working hours.
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