Last weekend, Publish What You Fund and the Guardian hosted a ‘hack day’ as part of the Development Data Challenge. The event helped kick off hackdays around the world to interrogate – and explore the limits of – recently released aid and government spending data.

Hacks and hackers, developers and development experts gathered at the Guardian offices in London to explore the data donors have recently published to the IATI. One group tried to answer the question of whether it is possible to track funds from donor agencies through their partners to delivery on the ground (unfortunately, they found, it isn’t). Another group worked on tools to examine the quality of data donors have published to IATI (unfortunately, it seems, it isn’t always very good).

A full list of projects and code are listed on the Guardian website.31

The next data challenge is scheduled for Helsinki, as part of the first Open Knowledge Festival.