Fremantle
· DuckDuckGo · searching · OSM ·
I make great use of DuckDuckGo's bang feature, with which you can change your search target by typing <search term> !<bang code>, where bang code is any of the defined codes. For example, I saw a map just now of a place called 'Erdalen' and didn't know where it was, so I pressed ctrl-L to enter Firefox's address/search bar, and typed !osm erdalen and it took me straight to this place south of Bergen in Norway.
Other bangs that I use a lot along with !osm are !w for Wikipedia, !wd for Wikidata, and !r for Reddit.