Development in QGIS

Core Development

QGIS is an Open Source Geographic Information System that currently runs on most Unix platforms (macOS/OS X included) and Windows. Developed using the Qt toolkit (, it’s mainly written in C++ and Python languages. This means that QGIS feels snappy to use and has a pleasing, easy to use graphical user interface.

QGIS source code is available at If you wish to help on bug fixing or adding new features to the application, you are most welcome and can freely contribute via pull requests. You can also get in touch with the other developers through their mailing list at

Beside this, we’ve written a short QGIS Developers Guide to help you in QGIS coding. It provides rules, tools and steps to easily and efficiently contribute to QGIS code and is available at You are warmly encouraged to read it.

Plugin Development

QGIS has a plugin infrastructure. You can add a lot of new functionality by writing your own plugins. These plugins can either be written in C++ or in Python.

If you want to contribute to QGIS Project with your plugin, it’s highly recommended to read the QGIS Developers Guide at our documentation website:

Developing C++ Plugin

Preparing the Environment and Setting up the Repo

Setting up the Plugin Directory

Inside the QGIS folder:

cd src/plugins/

Now follow the instructions in the screen wizard to create a folder for your plugin. After the required input is given, a folder for the plugin is created. Read the README inside the plugin folder to create a plugin.

Building QGIS now will also build your plugin. After starting QGIS enable the plugin to see it and show its dialog.

Developing Python plugin

QGIS has a lot to offer for python developers too.

QGIS has python bindings so you can automate tasks in QGIS via python.

Interested in python plugin development, easiest way to start is using the Plugin Builder plugin in QGIS. Search for Plugin Builder in the plugin manager of QGIS, or read up here:

You can also have a look into the Python Cookbook in our Documentation site:

Looking for examples of python plugins, see

You can find the QGIS-iface which you can use via python here: (for QGIS testing) (for QGIS 2.0) (for QGIS 1.8)