WebListy is a unique search engine. To quote The Make Use Of blog, “Weblisty lets you view the top… most trafficked websites in different countries for any topic.”

You type in your query, select the country, and click search.  The results include a screenshot as well as a text description.

I found quite a few new (to me) useful websites when, for example, I typed in “ESL” or “EFL” for various countries.