Mockup Generator sits in your menu bar and allows you to capture screenshots of your favourite websites and wrap them in device mock-ups. Current device mock-ups: Apple Macbook, Apple Watch, iMac (Pro), iPhone 7 and Google Pixel.
Pika
Tucked in your menu bar, Pika makes it simple to quickly find colours onscreen, in the format you need.
Choose from popular colour formats like hex, RGB, HSB, or HSL.