Nice blog (in appearance, contents and implementation). See https://archive.casouri.cat/note/2018/blog-in-org-mode-revisited/index.html for an update.
An interesting idea for entering mathematical symbols is presented on https://archive.casouri.cat/note/2020/insert-math-symbol-in-emacs/index.html

A Static HTML Generator for Emacs and Org-Mode.
Blog Ready: permalinks, categories, pages, posts, theming and custom templates.

https://validator.w3.org/nu/?doc=https%3A%2F%2Femacs.love%2Fweblorg%2F reports two errors:
Element div not allowed as child of element h1 in this context.
An img element must have an alt attribute, except under certain conditions.

Solarized colorschemes for org-mode HTML exports. It is supposed to be used as a single stylesheet for HTML documents that uses regular HTML elements.

Blog article describing an rsync-based backup system, with reasons why it was chosen over restic.

Interesting blog written in org-mode, using https://github.com/bastibe/org-static-blog, written by Bastian Bechtold https://bastibe.de/
Some highlights:
https://jao.io/blog/eww-to-org.html convert HTML to orgdown
the links below probably need to be edited, removing the date
https://jao.io/blog/literate-programming.html literate programming
https://jao.io/blog/signel.html, a barebones signal chat on top of signal-cli, written in literate style
https://jao.io/blog/programmers-go-bananas.html category theory
https://jao.io/blog/dancers-at-the-end-of-time.html sounds like an interesting book.
https://jao.io/blog/geometrically-speaking.html geometric proofs, Kindergarten Quantum Mechanics
https://jao.io/blog/observatory.html Mozilla Observatory to check a website's security
https://jao.io/blog/simple-note-taking.html simple note taking

Org-roam is a solution for effortless non-hierarchical note-taking with Org-mode. With Org-roam, notes flow naturally, making note-taking fun and easy. Org-roam should also work as a plug-and-play solution for anyone already using Org-mode for their personal wiki.

Just what it says. Can use Dropbox, Google Drive or WebDAV as back-end storage.
See also https://organice.200ok.ch/documentation.html and the short review https://colekillian.com/posts/comparing-organice-and-orzly/
As of 2022-06-01, it offers sign-in with GitLab, WebDav, DropBox and GoogleDrive on https://organice.200ok.ch/sign_in, or once signed in on https://organice.200ok.ch/files
Perhaps I shall try the GitLab option before WebDav via NextCloud?
The link bin/compile\and\upload.sh on https://organice.200ok.ch/documentation.html#org48615b6 is not formatted correctly: the URL has underscores which are shown as \subscripts.

Currell Berry's collection of software and essays. Includes typographically improved version of the draft ANSI standard for Common Lisp
http://cvberry.com/tech_writings/notes/common_lisp_standard_draft.html

Write him about the typos I found.

Specification document skeleton for a web application, incl. usage examples of various org-mode features:
       Inline, text-based diagramming via Ditaa, Graphviz & PlantUML
       Hyperlink abbreviations (incl. presets for GitHub, RFC, W3C, Wikipedia)
       Section status flags, tags & custom properties
       Tables
       Named section IDs for internal x-refs
       Footnotes
       Automatically updating fields (e.g. publication date)
       Automatic updating of document changelog (using git commits)
   Beautiful, minimal, responsive CSS theme with print support (also for PDF generation)
   Basic syntax highlighting of code blocks