Syncthing. With godot as a close second.

Definitely this order:

• FreeCAD

• KiCAD

• Jellyfin

• Bazarr

• Immich

• Prusaslicer

• Homeassistant

Waterfox, CalyxOS, Signal, the JPEG-XL team, GNOME

GrapheneOS. But hard to say because anything that gives us a choice besides either Apple or Google or Facebook, etc, we desperately need.

A lot of the options listed in this thread are good choices - but most are big projects that get a fair amount of financial attention as it is (though very rarely enough to actually support the devs).

If I had $5k to donate to a project, I'd choose some of the really small FOSS projects that I use heavily, like AudiobookShelf

For me, I would definitely put the money into the open medical science stuff going on, like projects that are working towards open source insulin production and pumps and stuff. A close relative is diabetic (T1), and the things he buys just to stay alive are not cheap, and I would want that to change. The work those people are doing is extremely important, since insulin production is currently a very complex process and it takes significant time. Large Pharma companies have labs dedicated to doing it and they've streamlined the more traditional ways of doing it, which, due to the complexity, those methods have a very high (financial) barrier to entry, which keeps other, more generic labs from producing the substance needed for diabetics to live.

I'm talking about liquid insulin.

The FOSS push on this is focused on making a simpler method of production, and delivery of the insulin, giving third party and generic drug manufacturers an alternative to the high-cost of setting up a manufacturing line for insulin, and hopefully driving costs down.

They're also working on delivery systems, aka insulin pumps, that are FOSS. The problem there will be regulatory approval; the medical community is fairly strict when it comes to this stuff.... In any case, as nice as many things mentioned here are, I always feel that those guys always need help.

• FreeCAD
• Inkscape
• The free software foundation

Joplin. End-to-end-encrypted, markdown-formatted note-taking app that you can either sync using the cloud, Syncthing, or use entirely offline.

Kiwix since it allows accessing some services offline (Wikipedia, iFixit, StackOverflow) where Internet cannot be taken for granted. You can host a small Kiwix server than can be accessed as a local hotspot and browser whatever packages were downloaded into it.

The Tor project, Libre Office, Signal, Matrix.org, NixOS, Fedora

AROS

All of them.

NetBSD

• SuperSlicer
• klipper

They would be the ones I've been using for long: Inkscape GIMP xcfe gnome Mx linux Libreoffice Handbrake Rawtherapee Krita Easytag VLC Rhythmbox

There are more. I just donate some bucks now and then but I would like to help them all with more.

I'd also donate to ReactOS. Nobody uses that (me included) but I see a lot of effort, I'd donate to them

I'd donate it to one or more open source projects that make the most positive impact in society

Kdenlive

FlorisBoard

NATRON (Nuke like compositing engine)

MBS-Labs (human 3D models in Blender)

Easily the surface-linux kernel project, that level of dedication is incredible and without I wouldn't have my favorite laptop running linux right now.

And probably all of KDE's various developers if possible, since I both love the actual desktop environment and all the various tools they provide (like Elisa, Kdenlive, and KDE Connect).

Beehaw, megalodon and firefish

GIMP for sure.

Tybalt

@nutbutter

Four of many possibilities:

Anki
Feeder
Joplin
New Pipe

2004Scape.org or Godot (that’s already been mentioned though)

Kbin, Mastodon, Signal, CryptPad, Bitwarden Libre Office, Paint.NET, OpenShot, Audacity, F-Droid