I discovered this blog via the link to http://johnj.com/posts/to-the-metal/ on https://planet.lisp.org/
His static site generators https://github.com/eigenhombre/weeds and https://github.com/eigenhombre/organa look interesting too.

Found on https://www.reddit.com/r/emacs/comments/1c70qez/emacs_successors/
kons-9 is a new 3D computer graphics and animation software system being developed as an open source project under the MIT license.

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

"What if documentation really lived in the code?

Docstrings are already there. If some narrative glued them together, we'd be able develop and explore the code along with the documentation due to their physical proximity.

With the simplistic tools provided, one may emphasize the narrative as with Literate Programming, but documentation is generated from code, not vice versa, and there is no support for chunking.

Code is first, code must look pretty, documentation is code."

Fe[nl]ix explains his approach to maintain a version number for Lisp systems.

Polynomial root finder for {dm,hp}42s using Laguerre's method. Found on https://forum.swissmicros.com/viewtopic.php?p=20091#p20091
The Emacs tools for {dm,hp}42 code on https://richmit.github.io/hp42/hp42s-meta.html and the
Lisp library http://www.mitchr.me/SS/mjrcalc/ look interesting too.

Failed attempt to build sbcl on Android using ecl, which exists both as inofficial Termux package and as Termux-independent Android app
https://gitlab.com/eql/EQL5-Android/
But I believe that ECL only provides a byte compiler since native compilation is done via C.
See also https://www.christopherbiscardi.com/2014/1/10/common-lisp-on-android-running-the-mocl-android-example

Fileworthy is intended to facilitate easy management of files and notes across many devices.

literate-lisp provides an easy way to use literate programming in Common Lisp language. It extends the Common Lisp reader syntax so a Common Lisp vendor can read org files as Common Lisp source files.

By using this package(literate-lisp), Emacs org mode and Emacs Lisp library polymode, literate programming can be very easy in one org file containing both documentation and source codes, and this org file can interact well with SLIME.

This repository provides a tiny .emacs file to set up Emacs quickly for Common Lisp programming. README.md provides a detailed description of how to set it up and get started with Common Lisp programming.