Branch of GNU ed maintained by its original author Andrew L. Moore.
Found via https://lists.gnu.org/archive/html/bug-ed/2025-01/msg00003.html

Interesting information on hard/symbolic links,file permissions etc.
Found via the TUHS mailing list https://www.tuhs.org/pipermail/tuhs/2024-September/030853.html

A DECstation emulator on a business-card sized PCB. The description is a nice read.
https://hackaday.io/project/196769-decstation2040 for a RP2040 version, with 32 MB HyperRAM, 1024 x 864 mono video, and USB mouse/kb

See README.me for instructions to set up uu{en,de}code for transferring data between emulated v7 and the host system.

https://www.miskatonic.org/2023/11/05/fd/ fd, a modern replacement for Unix find(1). Refers to a list of replacements (improvements) for several Unix tools on
https://github.com/ibraheemdev/modern-unix
See also https://www.miskatonic.org/2023/02/21/commands/ for a one-line pipeline to calculate frequencies of unix commands,
https://www.miskatonic.org/2022/02/12/pihole/ for π-hole
https://www.miskatonic.org/2021/09/26/launcher/ custom GNOME launcher
https://www.miskatonic.org/2020/08/25/firefox-and-emacs-again/ release race between Firefox and Emacs
https://www.miskatonic.org/2020/05/28/emacs-refactoring/  Emacs refactoring - maintaining Emacs configuration
https://www.miskatonic.org/2020/05/24/backups/ Backups and encrypting disks in Linux
https://www.miskatonic.org/2019/07/05/sshfs-phone/ Mount an Android phone on Linux/Unix with sshfs
https://www.miskatonic.org/2017/08/21/lineageos/ LineageOS update

Document explaining the development of a bc/dc clone. Might be a good example to follow, if I ever make a public project.

Found via https://www.tuhs.org/pipermail/tuhs/2022-September/026476.html

Oil is a new Unix shell. It runs your existing shell scripts, and it's a new language for Python and JavaScript users who avoid shell!
Found on https://swalla24.people.uic.edu/about/

Just what it says. The author had read the handbook soon after it came out and has revisited it 25 years later. He also offers interesting comments about most of the competing operating systems. See also
Making old systems accessible via the web https://athornton.dreamwidth.org/14733.html
Exploring old unixes https://athornton.dreamwidth.org/14340.html