This one ? https://github.com/ProtonMail/inbox-desktop/releases
v1.0.3 Latest Fixes
Fixed an issue that led to opening a new Desktop App window when users clicked on the Update button of the Calendar Drawer in Mail. Uninstalling the application on Windows removes user data from the application data folders. The application is placed to a correct application category on Linux. No need to refresh the other application (Mail or Calendar) to apply changes when switching themes.
In the Lemmyverse for self-hosting Immich looks very popular (despite their warning : The project is under very active development. Expect bugs and changes. Do not use it as the only way to store your photos and videos!)
The old skool Piwigo might do for you ? https://piwigo.org/