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Coulr vs Piccolo: catalog facts
Coulr	Piccolo
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence.
Linux	Linux
Screen color picker built in Quick conversion between RGB and hex	Picks colors from anywhere on screen Copies colors in CSS formats
Linux only Few features beyond conversion and picking	Very new project with a small feature set Linux only
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.