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Apache OpenOffice vs Calligra Suite: catalog facts
Apache OpenOffice	Calligra Suite
Free Free and open source under the Apache 2.0 licence, maintained by the Apache Software…	Free Free and open source, developed by KDE.
Windows, macOS, Linux	Linux
Six familiar applications in one install Reads and writes the OpenDocument standard	Word processor, spreadsheet and presentation apps in one suite Includes Karbon for vector drawing and KEXI for databases
Cannot save in .docx or .xlsx, only open them Releases are years apart; the 4.1 line dates from 2014	Smaller user base than LibreOffice Aimed mainly at KDE and Linux desktops
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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