Webmaster's Toolkit - this is a software utility that allows you quickly measure the size of objects on the screen, picking the colour value from any pixel of the screen and alter or produce your own colors with the Photoshop-style Color Picker.

Common Features
-pixel ruler for measuring the distance with perfect accuracy up to a pixel;
-choice of any color with a PhotoShop-style Color Picker;
-displaying values in most common formats (HEX, RGB, CMYK)
-picking the colour value from any pixel of the screen;
-adjusting the color.

This program might be useful for web developers who often face the need to quickly measure the size of an object or the space between objects on the screen up to a pixel, quickly detect the color in an HTML code or alter its hue, brightness or saturation.

Also the program may be useful for developers of different specializations who deal in one way or another with user interfaces.