License is vague:
MINCE (version 2.5, 2.6, and 2.63), DIFF (version 1.1), Scribble (version 1.3), Pencil (version 1.3), and Crayon (version 1.3), along with any associated documentation (the "Materials"), are Copyright © 1980—1985 by Mark of the Unicorn, Inc.

These Materials are provided in accordance with Title 17 U.S.C. Section 107, and distributed without profit, in original and unmodified form, for non-commercial research and educational purposes, for use by those who have expressed a prior general interest in receiving the Materials.

The Portable MINCE authors claim no affiliation, endorsement, or sponsorship whatsoever by the originators of the Materials.

If you wish to use these copyrighted Materials for any purposes beyond "fair use", you MUST locate and obtain permission from the current copyright owner.

DECODER stands for DEveloper COmpanion for Documented and annotatEd code Reference. The project participants develop an open source Integrated Development Environment dedicated to improve the efficiency of software development and maintenance and the quality of software in medium criticality systems, such as in IoT, cloud computing and HPC.

The entire Pro Git book, written by Scott Chacon and Ben Straub and published by Apress, is available here. All content is licensed under the Creative Commons Attribution Non Commercial Share Alike 3.0 license. Print versions of the book are available on Amazon.com.

See also https://github.com/vsedach/Vacietis and https://awesomeopensource.com/project/vsedach/Vacietis

List of Free Software network services and web applications which can be hosted locally.

Nice blog design, inspired by the Tufte Jekyll theme
https://github.com/kmayer/tufte-jekyll
which in turn is based on
https://github.com/edwardtufte/tufte-css which is demonstrated on https://edwardtufte.github.io/tufte-css/
The latter uses CSS, so it should be possible to use it with org-mode.

Later, I rediscovered the blog via Sacha Chua's link https://takeonrules.com/2024/05/18/a-quiet-morning-of-practice-to-address-an-observed-personal-computering-workflow-snag/ on https://sachachua.com/blog/2024/05/2024-05-20-emacs-news/
I like the https://takeonrules.com/site-map/epigraphs/
https://takeonrules.com/2025/06/14/re-the-cult-of-hard-mode is also interesting, so is
https://takeonrules.com/2025/05/05/migrating-to-linux-on-guiding-principles-and-keyboard-bindings/

This one looks simple.

Detailed description of the stack layout, use of R5 as frame pointer by the (V6) Unix C compiler on the pdp-11.

This web page describes a 19-line (769-byte) OCaml program that solves Sudoku puzzles.

Nonguix is a software repository for the GNU Guix package manager, which packages some software which cannot be included in the official distribution for ethical or policy-related reasons.
Includes CPU microcode, firmware for e.g. Broadcom Wireless chips.