If you don't mind self-hosting, everything you asked for is already implemented in PhotoStructure. I'm offering access to the beta for free in exchange for feed

If you don't mind self-hosting, everything you asked for is already implemented in PhotoStructure. I'm offering access to the beta for free in exchange for feedback. Tags (even hierarchical) are extracted from filenames, metadata, or sidecars, and editing will be available in the next major version. Asset deduping is best-of-class, not just using SHA, but detecting JPG/RAW pairs, rotations, and even lossy downsampling and metadata stripping (like what happens from uploading to some cloud services). There's a SPA to view libraries that scales to very large (1mm+) libraries. There's a simple REST API bound to localhost. Auth is coming in a future release. https://photostructure.com/about/release-notes/ https://photostructure.com/about/release-notes/ It runs on desktops, headless servers, and docker. You can sign up for beta access on the front page and wait for the next batch of invites that I'll send out with the next stable release. You can also send me an email if you want to try out the current version. Disclaimer: I'm the author.