Upspin sounds interesting.
There are other interesting articles, for example
https://commandcenter.blogspot.com/2019/01/notes-from-1984-trip-to-xerox-parc.html
https://commandcenter.blogspot.com/2018/02/cerns-ipod-like-control-devices-from.html
Ironically, I found this via
https://ambrevar.xyz/links/index.html
where both Kernighan and Ritchie's book "The C programming language" and Kernighan and Pike's "The Unix programming environment" are classified as "Unix books you’d rather not read".

Here's a list of protocols and software that use or support the superfast, super secure Ed25519 public-key signature system from Daniel J. Bernstein, Niels Duif, Tanja Lange, Peter Schwabe, and Bo-Yin Yang.

Rclone is a command line program to sync files and directories to and from a number of cloud storage services, including
- Google Drive
- Nextcloud

Milonga is a customizable theme for Emacs, based on the Tango color palette. The specificity of Milonga is in the way it is programmed. Every basic color in the palette has a corresponding foreground and background face, and every themed face inherits from one or two of them instead of having its color hard-wired. This means that if you want to change one of the original colors throughout the theme, you only need to customize one (or two) faces.

Milonga provides the `milonga-theme' Custom group from which you may access the aforementioned core faces.

Emulator of the MIT CADR. Basically a program to run its microcode. Last updated 2006-07-11.

Xpra is an open-source multi-platform persistent remote display server and client for forwarding applications and desktop screens.
It gives you remote access to individual applications or full desktops.
On X11, it is also known as screen for X11: it allows you to run programs, usually on a remote host, direct their display to your local machine, and then to disconnect from these programs and reconnect from the same or another machine, without losing any state.
It can also be used to forward full desktops, from X11 servers, MS Windows, or Mac OS X.

Xpra also allows forwarding of sound, clipboard and printing services.
Sessions can be accessed over SSH, or password protected over plain TCP sockets with or without SSL.
Xpra is usable over reasonably slow links and does its best to adapt to changing network bandwidth constraints.

Blog describing many cases where algorithms with quadratic complexity appear, almost always unintentionally.

Just what it says. Can use Dropbox, Google Drive or WebDAV as back-end storage.
See also https://organice.200ok.ch/documentation.html and the short review https://colekillian.com/posts/comparing-organice-and-orzly/
As of 2022-06-01, it offers sign-in with GitLab, WebDav, DropBox and GoogleDrive on https://organice.200ok.ch/sign_in, or once signed in on https://organice.200ok.ch/files
Perhaps I shall try the GitLab option before WebDav via NextCloud?
The link bin/compile\and\upload.sh on https://organice.200ok.ch/documentation.html#org48615b6 is not formatted correctly: the URL has underscores which are shown as \subscripts.

clockspeed uses a hardware tick counter to compensate for a persistently fast or slow system clock. Given a few time measurements from a reliable source, it computes and then eliminates the clock skew.

sntpclock checks another system's NTP clock, and prints the results in a format suitable for input to clockspeed. sntpclock is the simplest available NTP/SNTP client.

taiclock and taiclockd form an even simpler alternative to SNTP. They are suitable for precise time synchronization over a local area network, without the hassles and potential security problems of an NTP server.

Draw diagrams in the browser. Mentioned on MoHP.