Searchme is a nice search engine that would be accessible to all levels of English Language Learners. It shows images of the sites themselves, as well as giving categories you can choose to refine your search further.
The visual support is helpful and the categories can help students develop some additional skills. The webpage images are shown in a carousel format that is very easy to maneuver unlike some other search engines I’ve seen with that format. Plus, adult-only sites are supposed to be automatically excluded from the search results.
Searchme is still in private testing, but they’re giving everyone access who wants to try it. I’ll eventually place a link on my website under Search Engines, but won’t do so until it’s officially public.