I like mapy.com as a Google Maps replacement. It's essentially a very good OSM renderer, with a great website and app, including offline access, routing, and real-time traffic. Also very good bike/hike routing, if that's your jam.

But there's no substitute for GMap's POI database.

I second mapy. I've replaced Google maps with this one ~5 years ago and never looked back. You can download specific maps for a country and within that specific federal states to reduce space consumed. I use it mostly for biking and hiking - you can plan tours with scaling duration/kilometers which is nice for a region you are unfamiliar with. Like parent wrote, offline access, routing, RT traffic. Can recommend.

Mapy looks nice!

> But there's no substitute for GMap's POI database.

I was surprised to see that Kagi uses Apple's POIs for searching maps. It seems to be pretty decent, and Apple is at least a little more privacy-friendly. Lately I've been using Kagi to search for businesses then opening the directions in Google Maps.

I tried using OSM directions, but the walking time calculations are always really far off from what Google Maps says. I don't drive anymore, only walk and public transit, so I can't really speak to how well OSM's driving directions are.

For a mobile and offline-friendly solution, organicmaps.app is brilliant!