Interim is an attempt to implement an operating system using ideas from the Lisp machines and Plan 9.
https://github.com/mntmn/interim
The blog has other interesting articles on (Emacs) Lisp, Scheme, git...

I read Literate Configuration by Diego Zamboni. Now I want to replace my Dotbot-managed dotfiles with an Org file.
https://leanpub.com/lit-config/
https://github.com/anishathalye/dotbot
Found via https://genehack.blog/2020/04/meta-post/
where https://randomgeekery.org/tags/indieweb/ was mentioned.

Bastian ported GNU Radio to Android, this was announced on
https://www.rtl-sdr.com/gnu-radio-code-for-android-now-released/
There are many other interesting articles, e.g. how to measure SDR performance, allocating CPU cores to SDR etc.

This post is a survey of technical and community issues connected to Plan 9 root file servers. The author is not a member of any Plan 9 tribe save Grid. Opinions are entirely my own and a lot of unsourced claims will be made based on my years of participation and observation of the Plan 9 community.

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".

Found via SchemePlanet, where he announced the R6RS Scheme compiler Loko. It targets AMD64, either on bare hardware or under Linux.
Just one interesting example: https://weinholt.se/articles/non-posix-filesystems/

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

Abstract: The Breakthrough Starshot project proposes using radiation-pressure propulsion to send multiple spacecraft in the gram-range mass to interstellar targets. There are numerous engineering challenges to accomplishing this mission, but their project discusses speeds and accelerations previously only discussed for cannon projectiles and particle physics experiments. This article examines the problem from first principles to see if the project is even orders-of-magnitude possible. A preliminary check on their numbers seems to confirm that the project is possible in principle.
https://stkwans.blogspot.com/2012/04/program-66.html is about the Apollo guidance computer.
https://stkwans.blogspot.com/2012/09/a-review-of-adxl345-and-bma180.html

This blog is a companion to T J Sawyer's Web Page that outlines the history of the Burroughs Datatron 205 [1]
and Paul Kimpel's incredible 205 [2] and 220 [3] emulators.
Found on Cleve Moler's blog
https://blogs.mathworks.com/cleve/2017/10/09/my-first-computer-the-burroughs-205-datatron/

[1] http://tjsawyer.com/B205Home.php
[2] http://www.phkimpel.us/ElectroData-205/
[3] http://www.phkimpel.us/Burroughs-220

Blog about computer history, describing the source of cat(1), Lisp, RSS, Ada Lovelace's first program and more.