Ongoing crowdfunding campaigns

[Buovjaga]

OpenBSD 2016 fundraising campaign
KDE contributor Scarlett Clark on Patreon

[Buovjaga]

Patreons:
Antergos (distro)
Apricity (distro)
Bcachefs (Kent Overstreet)
GIMP (Pippin)
GIMP (ZeMarmot)
Eric S. Raymond
FNA, reimplementation of Microsoft XNA
Joey Hess
LinuxLite (distro)
Morevna Project/Synfig
musl libc
OctoPrint (Gina Häußge)
OpenShot video editor
PulseAudio (TanuK)
Redox OS (Jeremy Soller)
Rob Landley (Toybox, Aboriginal Linux, toolchains, kernel, qemu)
Solus (distro)
Timothée Giet (GCompris)
Void (distro)
VueJS (Evan)
Yorik van Havre (FreeCAD)

[Buovjaga]

The projects in the previous post were found with a web search for "linux".
The ones below were found with "open source". I skipped most web-related projects, but not all.

Calibre
Dave Täht is creating a better Internet (first bufferbloat, now improving wifi)
elementary OS (distro)
Emacs Go mode and other tools
GhostBSD
hapi.js node framework
HaxeUI
ImGui C++ lib
Laravel
Marlin (firmware for 3D printers)
Mastodon (A GNU Social-compatible microblogging server)
Milton Paint (Linux port underway)
MuseScore
Ondřej Surý is creating Debian Packages (PHP, IMAP servers, DNS)
OpenFL
Phalcon PHP framework
PlantUML
PyDev and other tools
Ubuntu MATE (distro)
Unison programming language
Vim-go

[qbuntuone]

FWIW, I'm currently running a crowdfunding campaign for qutebrowser, which is a vim-like web browser.