Zenko CloudServer

Judgement

What it is

Building block

What it does

A Node.js server implementing the Amazon S3 API that stores data locally or passes it to Azure, Google Cloud and other backends.

Adopt it when

You need a local S3-compatible endpoint for development and tests, or one S3 API in front of several clouds.

Watch out

It is mainly a component of Scality's products, and dedicated object stores outperform it for heavy production use.

Ready for

Usable

Runs as

Self-hosted server

Built with

JavaScript and Node.js

How established

Established: started 10 years ago, latest release 9.5.2.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Zenko CloudServer → V8 → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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