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---
layout: page
title: "Developers"
description: "Home Assistant developer information. Everything to get you started"
date: 2014-12-21 13:32
sidebar: false
comments: false
sharing: true
footer: true
---
Home Assistant is build from the ground-up to be easily extensible by other developers using
components. It uses [Python 3](https://www.python.org/) for the backend and
[Polymer (Webcomponents)](https://www.polymer-project.org/) for the frontend.
Home Assistant is open-source and MIT licensed. The source can be found here:
- [home-assistant](https://github.com/home-assistant) - Python server-backend
- [home-assistant-js](https://github.com/home-assistant-js) - javascript-backend powering the client
- [home-assistant-polymer](https://github.com/home-assistant-polymer) - Polymer UI
### {% linkable_title Starting development %}
You will need to setup a development environment if you want to start developing a new feature or
component for Home Assistant.
1. Clone the Home Assistant repository:<br>
`git clone https://github.com/balloob/home-assistant.git`
2. Setup your computer for development:<br>
`python3 setup.py develop`
After following these steps, running `hass` will invoke your local installation.
### {% linkable_title Submitting improvements %}
Improvements to Home Assistant should be submitted one feature at a time using Github pull
requests.
1. Go to [the Home Assistant repository](https://github.com/balloob/home-assistant)
and click fork in the top right.
2. Follow steps in the previous section but with your forked repository.
3. Create a new branch to hold your changes<br>
`git checkout -b some-feature`
4. Make the changes you want
5. Commit the changes<br>
`git add .`<br>
`git commit -m "Added some-feature"`
6. Push your commited changes back to your fork on Github<br>
`git push origin HEAD`
7. Follow [these steps](https://help.github.com/articles/creating-a-pull-request/) to create your
pull request.
### {% linkable_title Further reading %}
<ul>
<li><a href="{{ root_url }}/developers/architecture.html">
Home Assistant Architecture
</a></li>
<li><a href="{{ root_url}}/developers/frontend.html">Frontend development</a></li>
<li><a href="{{ root_url}}/developers/creating_components.html">
Creating a custom component
</a></li>
<li><a href="{{ root_url}}/developers/add_new_platform.html">
Adding support for a new platform
</a></li>
<li><a href="{{ root_url }}/developers/api.html">Rest API</a></li>
</ul>