A significant part of the Haskell community infrastructure—including the haskell.org website, Hackage, Hoogle and the build infrastructure for GHC—runs on donations from the Haskell community administered by haskell.org.
You can donate right now using several methods including PayPal and check:
Haskell.org can also accept donations through employers via Benevity using the unique ID 475236502.
As Haskell.org is a 501(c)(3) non-profit, donations are tax-deductible.
This year marked the second Haskell Summer of Code program which provided grants for 15 students working on open source Haskell projects over the summer. The projects improved Haskell tooling and libraries as well as supporting Haskell education through improvements to code.world. A detailed retrospective can be found on summer.haskell.org: