xaraartech

Abuzer

Adds functionality to search images from post page and attach as featured image. 
You will require to create an API key on bing for search API. 
GOTO: https://azure.microsoft.com/en-us/services/cognitive-services/bing-image-search-api/ or https://dev.cognitive.microsoft.com/docs/services/56b43f0ccf5ff8098cef3808/operations/571fab09dbe2d933e891028f 
And generate your “Ocp-Apim-Subscription-Key”

External featured image from bing

Adds functionality to search images from post page and attach as featured image.

goresponsive

This widget shows you latest posts featured images in a tiled fashion. It is responsive. You can select the category name you want to display images from. Try it out, it is cool.
Demo: http://onion.goresponsive.in/
documentation
http://goresponsive.in/news-in-pictures-widget/

Go News In Pictures

Plugin for viewing best news photos, news pictures online

External featured image from bing vs Go News In Pictures