Apps to Built-in Color picker

GIMP (GNU Image Manipulation Program) is a powerful, free, and open-source raster graphics editor used for image manipulation, retouching, composition, and authoring. It supports a vast array of file formats and provides sophisticated tools comparable to commercial alternatives, making it a versatile choice for photographers, designers, and artists.

Agave is a lightweight, open-source color scheme generator for designers and developers, offering tools to create, manage, and extract color palettes from various sources, particularly images.

gcolor2 is a minimalist and lightweight color selector tool for Linux, providing a simple interface to pick colors from the desktop or predefined palettes and generate various color codes.

ImageGlass is a lightweight, versatile image viewing application designed as a modern, fast, and user-friendly alternative to the default Windows Photo Viewer. It supports a wide range of image formats and offers essential viewing tools alongside advanced features through its extensible architecture.