Dynamic Mockups - Create Realistic Mockups at Scale
Darkness: Beautiful Dark Themes - Chrome extension that provides beautiful dark themes for Facebook, Google and more.
Placeit - Generate realistic product shots in seconds
f.lux - f. lux is a piece of software for Windows, Mac, Linux, iOS, and Android that provides a blue light filter over your screen. Research suggests limiting our exposure to blue light in the hours before bedtime can help us fall asleep faster.
Smartmockups - Create stunning product mockups, easily and online.
Stripe Atlas - The best way to start an internet business