Seaweed FS is described as 'SeaweedFS is a simple and highly scalable distributed file system to store and serve billions of files fast! SeaweedFS object store has O(1) disk seek and SeaweedFS Filer supports cross-cluster replication, POSIX, S3 API, ,…' and is a Cloud Storage service in the backup & sync category. There are more than 10 alternatives to Seaweed FS for a variety of platforms, including Linux, Mac, Self-Hosted, Windows and Web-based apps. The best Seaweed FS alternative is MinIO, which is both free and Open Source. Other great apps like Seaweed FS are Ceph, Garage, GlusterFS and Google Cloud Filestore.
In theory, Ceph should be best object storage, but theory is far from practice. Very complicated management, configuration. Seaweed is simple as downloading binary and running.