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KColorChooser vs Coulr: catalog facts
KColorChooser	Coulr
Free Free and open source under the MIT license.	Free Free and open source under the MIT licence.
Linux	Linux
Screen-wide color dropper Built-in web and Oxygen palettes	Screen color picker built in Quick conversion between RGB and hex
Linux only Basic feature set compared with dedicated design tools	Linux only Few features beyond conversion and picking
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
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 October 1, 2026

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