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Desmos vs KAlgebra: catalog facts
Desmos	KAlgebra
Free The calculators are free to use.	Free Free and open source under the GPL-2.0-or-later licence.
Web	Linux
Graphing, scientific, geometry and 3D calculators in one place Runs in the browser with nothing to install	2D and 3D function plotting Symbolic and analysis features beyond basic arithmetic
Web-based, so it needs a browser and connection Not open source	Linux only in the published downloads Expression syntax takes some learning
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0-or-later
No account needed	No account needed
Not stated if it 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.