Zenko CloudServer

Zenko CloudServer implements the Amazon S3 API, allowing applications to interact with object storage through a single, compatible interface. It can be run locally or in containers, supporting file‑system, in‑memory, or multiple backend configurations, and it exposes additional ports for internal metadata and data transfer. The server is self‑hostable and free to use under the Apache‑2.0 license, making it suitable for developers who need a lightweight S3‑compatible service for testing, continuous‑integration pipelines, or as an abstraction layer over diverse storage systems.

Developers can configure access keys, storage locations, and optional Vault‑based user management via environment variables, and the project provides Docker images and documentation for quick deployment. Its open‑source nature encourages contributions and customization, while the stable maturity level indicates a production‑ready implementation.