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Calligra Suite

Operating Systems:
GPL, LGPL, BSD license

Calligra Suite is an office software collection created from KOffice. It has applications for word processing, spreadsheets, presentation, databases, vector graphics and digital painting.

The software uses the OpenDocument format as its default file format and can import other formats, such as Microsoft Office formats. Calligra relies on KDE technology and is often used in combination with the KDE Software Compilation.