Does anyone know of an open source Mapstr alternative. I'd like to be able to create a shared map with a bunch of friends, where only us can see and edit the pins. Use case is sharing restaurants locations.

I gave Nextcloud Maps a go, but:
- not sure there is an iOS client
- the Android client doesn't seem to let you search by name to find a place
- Nextcloud doesn't let me limit access to certains apps to groups of user with enough granularity. 

 Il n'y a pas cette fonction sur openstreetmap? 

 Pas vraiment. Par contre il y a bien uMap, construit au dessus d'OSM. Et a priori on peut restreindre la visibilité d'une carte à "anyone with link", ce qui est suffisant pour mon cas d'usage. Merci !