Alternatives to Couleurs

Colour picker for colours onscreen

Tailwind CSS colour picker

Tool to set light or dark appearance on a per-app basis

Tool to disable temporal dithering on Apple Silicon Macs

Colour picker

Screenshot and screen recording tool

Screen savers

Menu bar app that provides more control over Night Shift

Screen saver that displays web pages

Audio player

Colour picker

Run commands and display their output on the desktop