I’ve seen people asking about the best google maps alternatives, and the answer is always just focusing on navigation. For that we have plenty of great apps like CoMaps.
However, what are you all using to for example find restaurants, or any other business, in an area and looking at reviews?
Some people use TripAdvisor, Foursquare, or Yelp, but all of them have smaller user bases and neither of them is open source:(
At the very least, they are not one of the big tech companies I guess.