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Letters vs Calligra Suite: catalog facts
Letters	Calligra Suite
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source, developed by KDE.
Linux	Linux
Designed to fit the GNOME desktop Available as a Flatpak from Flathub	Word processor, spreadsheet and presentation apps in one suite Includes Karbon for vector drawing and KEXI for databases
Very new project, started in 2026 Linux only	Smaller user base than LibreOffice Aimed mainly at KDE and Linux desktops
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.