Open Source and CKAN Community

At the Open Knowledge Foundation we believe strongly that open data is best served with open tools.CKAN is open source, free software. This means that you can use it without any license fees but more importantly, when you choose CKAN for your catalog you are also ensuring that you retain all rights to the data and metadata you enter, giving you freedom to move it elsewhere or manipulate it with your own tools without restriction.

There are lots of different open source licenses (you can find them at but CKAN is licensed specifically under the terms of the Affero GNU GPL v3.0.

One of the strengths of the open source model is in the communities that form around free software products. The CKAN community is no different, and is arguably one of the strongest open data communities in the world. Together, the CKAN community has a wealth of knowledge and expertise that other people using the CKAN software can draw on. The Open Knowledge Foundation draw on and contribute to this rich resource to help us drive CKAN product development.

See the public tickets at, read the developer documentation at or join the community mailing lists at