We support organisations and people who contribute to an open internet for all. We fund projects that help fix the internet through open hardware, open software, open standards, open science and open data. After its historical contribution to the early internet in Europe in the 1980's, NLnet has been financially supporting the open internet since 1997.
Maybe not a big name in the Bitcoin space, but worth to take a look. If some dev around here is based in Europe and open to fund its project, submit your proposal to this org. It will also help bitcoin, lightning, and nostr project be on the eyes of the public a bit more.
In principle anyone can apply: individuals, research organisations, non-profits, public institutions, companies of any size and type, etc. However, do read the eligiblity section of the fund you are applying for, as specific conditions may apply. All projects must be free/libre/open source: all scientific outcomes must be published as open access, and any software and hardware developed must be published under a recognised free and open source license in its entirety.
Btw: if you prefer to support the work this organization is doing, they also accept bitcoin donations