I saw this referenced a few days ago. Haven't investigated it at all.

https://garagehq.deuxfleurs.fr/

Edit: jeez, three of us all at once...

If you just need a simple local s3 server (e.g. for developing and testing), I recommend rclone.

rclone serve s3 path/to/buckets --addr :9000 --auth-key <key-id>,<secret>

https://www.versity.com/products/versitygw/

I haven't tried it though. Seems simple enough to run.

Seaweed and garage (tried both, still using seaweed)

A lot of them actually. Ceph personally I've used. But there's a ton, some open source, some paid. Backblaze has a product Buckets or something. Dell powerscale. Cloudian has one. Nutanix has one.

This one is usually the most recommended: https://garagehq.deuxfleurs.fr/

RustFS is good, but still pretty immature IMO

seaweedfs

wasn't there a fork with the UI?

Have heard good things about Garage (https://garagehq.deuxfleurs.fr/).

Am forced to use MinIO for certain products now but will eventually move to better eventually. Garage is high on my list of alternatives.