Honestly, anything fair trade.
Galler from Belgium is pretty amazing

How does the Finnish course compare to Duolingo?

If you check the FAQ, it specifies that it’s sheered wool, as the sheep are not kept for meat or wool production but but for grassland maintenance.
They caveat that males need to be culled as only one can live in a herd, otherwise sheep get culled once they become unable to feed by themselves.
So the wool is a byproduct of sheep that would be kept anyway.

That takes care of the storage aspect, but what about the software running locally?
As far as I can see on the websites, they say that their services can be integrated into backup solutions, but they don’t tell what software to use

Galler is amazing! The chocolate, but also their spreads.
And it’s fair trade

Am biologist, can confirm.
Best I saw so far were muddy rubber boots and muddy cargo pants.
Neurobiology is more like #2 and #3 and stand out among ecologist.