Cscope is a developer's tool for browsing source code. It has an impeccable Unix pedigree, having been originally developed at Bell Labs back in the days of the PDP-11. Cscope was part of the official AT&T Unix distribution for many years, and has been used to manage projects involving 20 million lines of code!
Found on the TUHS mailing list
https://minnie.tuhs.org/mailman3/hyperkitty/list/tuhs@tuhs.org/thread/XORIHRWCFZKNWHB2DXNVRX7LXU4DDIZ2/

This repo is an implementation the Plan 9 cpu command, both client and server, for Linux. More detail is available in the CPU chapter of the LinuxBoot book. https://book.linuxboot.org/cpu/
Unlike the Plan 9 command, this version uses the ssh protocol for the underlying transport. It includes features familiar to ssh users, such as support for the ssh config file.

The cpu command lets you log in from a local system to a remote system and see some or all of the files (how much is up to you) from the local system.

This is wonderfully convenient for embedded systems programmers. Because some or all the files can come from your local machine, including binaries, the only thing you need installed on the remote machine is the cpu daemon itself.

The section https://www.satdump.org/posts/1.1.4-release/#the-switch-to-jemalloc sounds interesting, perhaps this could be useful for Gpredict?

Based on the Industrial TRON (ITRON) variant of The Real-time Operating system Nucleus (TRON project) developed at the University of Tokyo.

Found on Tim Bradshaw's home page https://www.tfeb.org/
require-module sounds interesting.

Found vla the link to https://kinzler.com/me/z/ A simple, safe, and convenient front-end for lzip, bzip2, and gzip on https://www.nongnu.org/lzip/lzip.html#links
Some of his other tools e.g. https://kinzler.com/me/align and the scripts in https://kinzler.com/me/home.html look interesting.

Was mentioned several times on the TUHS and/or COFF mailing lists, I found
https://news.slashdot.org/story/23/07/29/192248/building-a-better-server-oxide-computer-ships-its-first-rack
https://blog.jessfraz.com/post/born-in-a-garage/
The book recommendations on https://blog.jessfraz.com/post/books/ look interesting

See also https://hubris.oxide.computer/ for Hubris, a small open-source operating system for deeply-embedded computer systems written in Rust.

Hardware to emulate the SPI memory in PCs to speed up the development of free BIOS firmware.
Found on the Oberon mailing list.
See also the articles about retrocomputing and security, e.g. https://trmm.net/Cosign/

The SLURM Workload Manager is an open source, fault-tolerant and highly scalable cluster management and job scheduling system[1] used on the DEAC cluster. Formerly known as Simple Linux Utility for Resource Management (aka SLURM)[2], it provides three key functions:

Allocates exclusive and/or non-exclusive access to resources (compute nodes) to users for X period of time
Provides a framework for starting, executing, and monitoring work on allocated nodes
Arbitrates contention for resources by managing a queue of pending jobs

See also https://wiki.deac.wfu.edu/user/Software:OpenPFGW a primality test program

Fast init for Linux systems. Reverse engineered from the EeePC fastinit over ten years ago by Claudio Matsuoka.
Found via  https://www.tuhs.org/pipermail/tuhs/2023-August/028865.html, where MicroEMACS 3.6
https://github.com/troglobit/MicroEMACS was mentioned. See also the author's blog https://troglobit.com/posts/