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KColorChooser vs ColorSmith: catalog facts
KColorChooser	ColorSmith
Free Free and open source under the MIT license.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Screen-wide color dropper Built-in web and Oxygen palettes	Screen color picker that works through the desktop portal Picker, gradient maker and palettes in one app
Linux only Basic feature set compared with dedicated design tools	Linux only Young project with a small user base
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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