color by number

A better calculator.

Find prime numbers.

Customize OS X folder icon.

Convert photos into faux-infrared images.

Plug-in for Adobe Photoshop.

Shows you grids of related colors.

Color picker, color scheme, and color palette tool.

Color picker app that combines color conversion and Retina image reduction.

Number forms, print serial numbers on tickets, receipts.

Color grading software.