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4 self-hosted alternatives to Zenko CloudServer (2026)

Zenko CloudServer, an open-source implementation of a server handling the Amazon S3 protocol.

License: Apache-2.0 · Language: Docker/Nodejs source code

GarageHQ source

Geo-distributed, S3‑compatible storage service that can fulfill many needs.

AGPL-3.0Docker/Rust

Harbor source

Cloud native image registry that stores, signs, and scans content.

Apache-2.0Docker/K8S

SeaweedFS

SeaweedFS is an open source distributed file system supporting WebDAV, S3 API, FUSE mount, HDFS, etc, optimized for lots of small files, and easy to add capacity.

Apache-2.0Go

ZOT OCI Registry source

A production-ready vendor-neutral OCI-native container image registry.

Apache-2.0Go/Docker

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