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CKAN: the open source
software powering open
data portals
Open Knowledge Foundation
Irina Bolychevsky (@shevski)
info@ckan.org
ckan.org okfn.org

Agenda
1. Open Knowledge Foundation
2. Context
3. CKAN overview
4. Discoverability and Data Management
5. Geospatial, Federation, Multilingualism
6. Roadmap
7. Questions

We are a global movement to open up
knowledge around the world and see it used
and useful.
The Open Knowledge Foundation
okfn.org

We build tools and communities to educate,
empower and connect people.
OpenDataProtocols.org

A piece of content or data is open if anyone is free to
use, reuse, and redistribute it — subject only, at most,
to the requirement to attribute and share-alike.
http://opendefinition.org/
What does open mean?

To utilize digital information more effectively to improve
governance, the economy and research
Context:
● Explosion of digital information
● Ever improving information technology
For example:
● Find a better way to get to work
● Build more sustainable cities
● Spend government money more effectively and
legitimately
What problems are we trying to solve?

Open Solution
Step 1: get the data openly licensed
Step 2: make it accessible - metadata,
formats, portal (ckan.org)
Step 3: start building, linking and turning data
into something more - information

CKAN - Quick Fact Sheet
Open Source - everything developed on GitHub
Extensible flexible componentized architecture
Developer friendly
Rich RESTful JSON API

Serves two main use cases
1. search and discoverability for re-users of
data
2. data management tools for publishers

1. Search and discovery
Online home for data
Central keyword search
Facet by tags, location, format, licence,
publishing department
Browse by groups, keywords, publishers
Standardized interface for viewing
Link to datasets or data directly
Previews and data exploration where possible

Numerous social and community features

Visualisation & data explorer functionality:
●Previews for many types of data
●Data API for .csv & tabular data
●Linkable URIs and ability to embed visualisations

Data explorer allows filtering, editing, plotting,
graphing and embedding

Data Management for Publishers
Easily store and update metadata records
Workflow and approval
Fine grained authorization controls
Broken link reports
Download and view counts

Authorisation & access control

Stats & analytics
CKAN comes with inbuilt stats + integration with
Google Analytics
Includes dataset counts, download counts +
reports

Link checker and 5 star ratings

Sophisticated geospatial capabilities

Geo-Search: Filter by location /
draw bounding box
WMS previews
Plotting GeoJSON / Longitude &
Latitude in tabular data
Support for:
● INSPIRE
● GEMINI 2.1
● CSW
● ISO 19139

Harvesting and normalization
Get metadata from external catalogs and
endpoints
CKAN will parse, validate and normalise to
create metadata records that look the same to
end users no matter where they came from
We can currently harvest: other CKAN
catalogs, CSW endpoints and WAFs serving
ISO 19139 documents

Federation
Search across catalogs in aggregator sites
(such as publicdata.eu)
Data Catalog Interoperability Protocol: http:
//spec.datacatalogs.org/

Multilingualism
Translated by into over 18 languages
https://www.transifex.com/projects/p/ckan/language/sv/
Fully supports all international characters
Added multilingual search, setting dataset
language level, string translations using a
vocabulary & more for the European
Commission Open Data Portal

Roadmap
Extending data exploration features
Supporting complex workflows
Better reports, analytics and notifications

Open Source
All our code is on Github: https://github.
com/okfn/ckan
Open issue tracker
Code contributions: https://github.
com/okfn/ckan/blob/master/CONTRIBUTING.
rst

Used by governments,
organizations and communities
around the world

Thank you.
Questions?
Open Knowledge Foundation
Irina Bolychevsky (@shevski)
info@ckan.org
ckan.org okfn.org

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