Just Color Picker - Free portable colour picker and colour editor for web designers, photographers, graphic designers and digital artists. Supports Windows and macOS.
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Instant Eyedropper - Identifying the color code of an object on the screen is usually an involved, multistep process:...
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
gcolor2 - GTK+2 Color Selector
PiPifier - PiPifier is a macOS 10.