It's now possible to "sponsor" Racket with a monthly contribution
using GitHub sponsors, at https://github.com/sponsors/racket/
Racket is and will always be free to everyone, but financial
contributions help both to pay for costs like AWS hosting as well as
support outreach events like Racket School and RacketCon.
I am personally blown away by the generous contributions so far, and
very thankful to the people sponsoring.
[Note that contributions via other methods of donating continue to
work fine -- this is just a new avenue.]