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Colour Contrast Analyser vs Gpick: catalog facts
Colour Contrast Analyser	Gpick
Free Free to download, with source code published on GitHub.	Free Free and open source.
Windows, macOS	Windows, Linux
Screen-wide eyedropper for foreground and background Results for WCAG 2.0, 2.1 and 2.2	Samples colors from anywhere on the desktop Builds and edits palettes for design applications
Windows and macOS only Checks one color pair at a time	No macOS build mentioned GTK interface may feel out of place on Windows
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
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 September 23, 2026

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