Facebook Design - Devices - Images and Sketch files of popular devices.
ShareIt by SocialPilot - Free Content Curation and Influencer Discovery Tool
Smartmockups - Create stunning product mockups, easily and online.
The Content Odyssey Newsletter - Every other week I discuss one B2B content experiment
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Digital Library - Organize your books, track your reading and write reviews