Welcome! Funtoo Linux (distrowatch) is a community-developed Linux meta-distribution based upon Gentoo Linux. Funtoo Linux is optimized for the best possible performance on the latest Intel and AMD hardware. Funtoo is led by Daniel Robbins, the creator of Gentoo Linux, and actively developed by the Funtoo community.
Funtoo does not use systemd, but OpenRC https://www.funtoo.org/FAQ:Do_You_Support_Systemd

Interesting software, such as
unifdef selectively removes C preprocessor conditionals. My version of this program now shipped by all the BSDs (including Mac OS X) and is used by the Linux kernel build system.
regpg safely stores server secrets using gpg, so you can keep them in version control.
picoro - tiny coroutine implementations in pure C. I wrote an accompanying article, coroutines in 20 lines of standard C.
Counting the days - tiny routines for converting Gregorian dates into linear counts, like Julian day numbers or Unix time_t. The date of the count - a small routine for converting linear day counts into Gregorian dates.
https://dotat.at/@/2016-04-22-synergy-vs-xmodmap-fight.html Why you can't use xmodmap to change how Synergy handles modifier keys
https://dotat.at/@/2023-05-26-whence-time.html Where does my computer get the time from?
https://dotat.at/@/2023-08-04-unix69.html a neat keyboard map
https://dotat.at/@/2024-01-29-four-point-egg.html construct an egg shape with straightedge and compass
His log of links, https://dotat.at/:/ which I found on the TUHS mailing list is also worth reading. He explains a bit about this log on http://dotat.at/.

A number of circuit which can be simulated in the browser. I believe that it uses JavaScript, not Java.
Many other physics-related simulations can be found on https://www.falstad.com/mathphysics.html

Interim is an attempt to implement an operating system using ideas from the Lisp machines and Plan 9.
https://github.com/mntmn/interim
The blog has other interesting articles on (Emacs) Lisp, Scheme, git...

Simple example of getopts.
There are a number of interesting articles on https://notes.neeasade.net/, e.g.
https://notes.neeasade.net/mobile-capture-with-orgzly-termux-and-syncthing.html

Open-source hard- and software for two-factor authentication.
I need to test them and want to understand the differences between versions 1 and 2. The articles
https://solokeys.com/blogs/news/trussed-announcement and
https://github.com/trussed-dev/trussed-totp-pc-tutorial look interesting.

VBinDiff (Visual Binary Diff) displays files in hexadecimal and ASCII (or EBCDIC). It can also display two files at once, and highlight the differences between them. Unlike diff, it works well with large files (up to 4 GB).

Org-roam is a solution for effortless non-hierarchical note-taking with Org-mode. With Org-roam, notes flow naturally, making note-taking fun and easy. Org-roam should also work as a plug-and-play solution for anyone already using Org-mode for their personal wiki.

Delta provides language syntax-highlighting, within-line insertion/deletion detection, and restructured diff output for git on the command line.
Found via https://tecosaur.github.io/emacs-config/config.html
There are other programs using the name delta, for example
https://guix.gnu.org/packages/delta-2006.08.03/
"Delta assists you in minimizing "interesting" files subject to a test of their interestingness."

Enjoy the various programming-themed writings available on offer. The latest post is available below and the archive link is directly above this text.