GNU Emacs / N Λ N O is a set of configuration files for GNU Emacs such as to provide a nice and consistent look and feel as shown below. It is based on design principles I described in the article "On the design of text Editors" [1] that is available on arXiv. The light theme is based on Material colors [2] and the dark theme is based on Nord colors [3].

The philosophy of nano emacs is to stick as much as possible to vanilla emacs without introducing too much dependencies (or none if possible) and to keep it modular enough. The idea is for users to copy the part they are interested in such as to include them in their own configuration.

[1] https://arxiv.org/abs/2008.06030
[2] https://material.io/
[3] https://www.nordtheme.com/

Timeshift – free and open source software for creating snapshots of the file system
Also described on the german blog https://hyperblog.de/hoergen/2020/06/28/timeshift-snapshot-tool

Static MathJax is a XULRunner application which loads a HTML input
file that uses MathJax into a browser, waits until MathJax is done
processing, and then writes the formatted result to an output HTML
file.

I have only tested exports from Emacs Org-mode as input files.  (As of
2010-08-14, MathJax is used by default with HTML exports in the
current Org development version.)

Optionally, references to the math fonts used will be converted to
"data:" URIs, thus embedding the font data into the HTML file itself.
(see [http://en.wikipedia.org/wiki/Data_URI_scheme])

The code is licensed under the GNU General Public License version
2, or, at your option, any later version.

Map Caps Lock key to Escape key, or any to any key, on Windows systems.

Found on Tony Finch's blog
https://fanf.dreamwidth.org/133551.html

Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.

"A radical, uncompromising, plug and play personal server, offering one-click installation and simple configuration of open source software services that run over Tor V3. The Embassy is your sovereign territory in the land of the Internet. No technical expertise required."
Found on the Fairphone forum.

Detailed description for using a network root filesystem on a Raspberry π. Has lots of details, for example I learned about the fatlabel program.

Pikchr (pronounced "picture") is a PIC-like markup language for diagrams in technical documentation. Pikchr is designed to be embedded in fenced code blocks of Markdown or similar mechanisms of other documentation markup languages.
Pikchr source code is released under a zero-clause BSD license.