Not just EU funds, but those are currently the largest funds at NLnet.

NLnet does 'funding as a service'. If you want to fund a particular area of FOSS, we (I work there) can administer that. We provide low overhead funding to FOSS projects and pay particular attention to how the ecosystem benefits from projects.

So 'boring' projects that improve adherence to standards, increase deployments of standards compliant software, test standards compliance are very welcome. Redecentralizing the web requires this work, but few people think that this work is fundable. It is and in our opinion is has a high ROI for society.

I have found that NLnet's funding is very competitive and pretty hard to get.

NLnet seems to have been doing the good fund for quite some time!