Comment by carbonatedmilk

Many UN agencies are already working hard to inculcate an open source / open methods / open data approach to everything they do.

There's a key standard for this: Digital Public Goods, which you can read lots more about here:

https://digitalpublicgoods.net/

https://unicef.github.io/publicgoods-toolkit/

https://digitalprinciples.org/#principles

If this sounds like fun to you, here's a couple of my favourite Digital Public Goods that have great communities and make real impact:

https://github.com/primeroIMS/primero

https://github.com/rapidpro/rapidpro

https://github.com/ckan/ckan

https://github.com/dhis2/dhis2-core