---
title: "Open source: what is open, and what is not · Elchi Studios"
description: "The EAuth SDKs are open source under the MIT licence. Why the rest of our software stays with us, and what you can check instead."
url: https://elchi.dev/en/open-source
language: en
---

Open source

# What is open, and what is not.

Code that runs in your application, we publish. Code that runs on our servers stays with us; what it does, we describe in public.

## `eauth-js` MIT

The EAuth SDKs: the core for any web page with no dependencies, plus React and Next.js, Svelte and SvelteKit, Nuxt. MIT licence, on npm under @elchi-studios.

-   `@elchi-studios/eauth`
-   `@elchi-studios/eauth-react`
-   `@elchi-studios/eauth-sveltekit`
-   `@elchi-studios/eauth-nuxt`

[On GitHub](https://github.com/Elchi-Studios/eauth-js)

## What stays with us

The platform behind EAuth, EMX and the websites. That is how every improvement reaches every customer at once. So that you can still check what it does, we describe in public how passwords are stored, which standards apply, where every server stands and who sees which data.

[Security in the documentation](https://docs.elchi.dev/security)