Sken.io - The most advanced tools for tracking changes on websites.
Smartmockups - Create stunning product mockups, easily and online.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
AppLaunchpad - Create free beautiful screenshots for App store/Google play
Finch for Windows - Make visual changes to any website. Immediately.
Placeit - Generate realistic product shots in seconds