I collected this list from MELPA site after reordering their menu depending on Dls. I looked in Github page for every package in the first several pages to grub any support links there.
I'll try to update this list later to include more packages. If you want to add links to other packages, feel free to open a new issue.
Emacs: Join the FSF to support Emacs and other GNU free software.
Org-mode: Buy Carsten Dominik's book, support Bastien Guerry (current maintainer) via Paypal or Librepay