You have a French initiative done in collaboration with OpenStreetMaps and the GeoCommuns (with IGN - the French National Geographic Institute): Panoramax. It's for streetview / street photos. As with OpenStreetMaps, it takes time for contributions to cover enough territory, but at least it's an alternative that has the merit of existing and communities can participate.

Alternatively, for the simple Google Maps, there's OpenStreetMaps, which is more of a database with online rendering, but which can be used by anyone either via turbo overpass commands or via an application like Organic Maps / CoMaps, Osmand for more customisation, profiles (car, boat, horses, etc) or contribution tools like MapComplete (web) and StreetComplete (or SCEE) on phones.

Some people have mentioned cartes.app, and there's also mapcarta for tourist attractions and places of interest. Otherwise, there are plenty of contribution tools like JOSM or local initiatives by country, region or local group, which would take a long time to list.