What is an open-source software steward?

Open-source software steward is a term defined in Article 3(14) of the CRA, to subject specific organisations to a subset of CRA obligations because they exist to support free and open source software that is intended for commercial activities:

‘open-source software steward’ means a legal person, other than a manufacturer, that has the purpose or objective of systematically providing support on a sustained basis for the development of specific products with digital elements, qualifying as free and open-source software and intended for commercial activities, and that ensures the viability of those products;