Thum.io - A real-time website screenshot generator

Anthony Boyd Graphics - Anthony Boyd Graphics is the fastest-growing platform that offers high-quality and advanced level mockups, textures, 3D models, and UI kits for free to help designers to save time and effort.

Microlink screenshot - Take a screenshot of any website

Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.

Screenshot Tracker - Capture and keep track of full-sized web page screenshots

Pixeden - Pixeden is an all-in-one premium design and web resources platform that provides high-quality graphic design templates and lots of other files.