Just Color Picker - Free portable colour picker and colour editor for web designers, photographers, graphic designers and digital artists. Supports Windows and macOS.
Color Hunt - Curated collection of beautiful colors, updated daily
Instant Eyedropper - Identifying the color code of an object on the screen is usually an involved, multistep process:...
Material Palette - Generate and export your Material Design color palette
gcolor2 - GTK+2 Color Selector
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!