M. Orange

I recommend Lawnchair!

It’s just a cute little comic strip that conveys a fun message.

These entities all have similar names and share similar origins, having been started by the founders of Open Collective and incubated in the Open Collective ecosystem, but are independent nonprofits with their own budget, accounts, staff, board of directors, and mission. They each have a separate commercial relationship with Open Collective. [emphasis not mine]

Open Collective, Inc. seemingly has nothing to do with OCF shutting down and neither entity has claimed anything to the contrary.

Right here.

This post also clarifies the differences between the entities that make up the Open Collective family and what this dissolution means.

Element is starting to look really really nasty in all of this. It’s disconcerting to me.

Genuine question: is there a reason why Syncthing’s ignore function doesn’t work for you? Because that’s what I would suggest, but it seems you’re already aware of it.

ETA: Maybe Resilio Sync might work for you? It touts selective sync. Since it’s based on the BitTorrent protocol, it might also chunk data, but it’s worth checking out.

If you can get past how questionable the developers are, Cider is an option for using Apple Music on Linux.