A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
For Example
We welcome posts that include suggestions for good self-hosted alternatives to popular online services, how they are better, or how they give back control of your data. Also include hints and tips for less technical readers.
Useful Lists
Immich - Google photo alternative.
You can freely select photos into an album and then invite users to the album. All your photos remain to your user account and sharing happens via manually created albums. Want to leave one specific picture out? Sure, just do not add it to the shared album.
Synology photos is a nice solution if you want to organize photos and each have your own library (that your devices can back up to automatically). You can then move selected photos to the shared library and put them in an album (or not). You can also share photos or albums via a link.
It's not perfect, but it seems to do what you're trying to achieve.
The thing that comes to mind for me is a self hosted NAS or Cloud Storage (depending from where you want to access your stuff). These solutions are relatively easy to set up and allow you to store many photos with good access control. It may not be exactly the thing you're looking for but it's an easy and expandable solution.
My wife and I each take a lot of random photos and screenshots and things we don't want to share with each other (and we probably don't want to be bothered with each other's random stuff), so we don't want to just do something like turn on Partner Sharing on Google Photos.
You can specify what gets shared with partner sharing. My wife and I have partner sharing set up so that it automatically shares photos of our kids with each other but not anything else.
P2P photo sharing. It auto compresses larger photos so its mainly for sharing the best photos with friends/family rather than a backup.