Free Software Foundation
I donated to Wikipedia, and i bought the Simple Thank You to help support Tibor Kaputa who makes the Simple Suite of apps for android for free on FDroid
Various organisations and clubs furthering scientific development and education.
I found that most of world’s problems are either caused by greed, poverty or a lack of education. Since you can’t end greed or poverty by just pouring money on those issues, I instead donate to institutions providing free learning materials, open source software and other causes indirectly bettering the world by empowering the underprivileged.
I also spend money on the Free software I use. I contributed to a repository listing donation options and I’d be happy if others would also contribute: https://github.com/n1trux/awesome-donations
