Is C development still a thing in this era of microservices and interactive web applications? Is there anyone doing application/library development in this language that does not have algebraic data-types and is so close to the metal that it deserves the “portable assembly” description?

Here are some examples I found on the internet. Yes there are many more. No I put here things I found interesting.

Companies

Amazon Web Services

Amazon FreeRTOS

Amazon bought FreeRTOS not so long ago and made it available under the MIT license along with some extensions.

Apple

Cups

CUPS will eventually survive us all

Juniper

libxo

gprc-c

Microsoft

Checked C

Netflix

Dynomite

Projects

Obviously there are many projects around that have had drawn serious interests over the last decade and are still developed.

BSDs, FreeBSD, NetBSD, OpenBSD

curl

git and libgit

Linux Kernel

MPV

systemd

Vim and Neovim

VLC