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

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