Wireworld is a cellular automaton, not unlike Conway's Game of Life. Except with Wireworld, the "cells" in play are a bit more constrained... you have a set of wires, and electrons run along them, multiply, and die out, but the paths stay the same.

Emacs-like editor running in the web browser.

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.

100-line Emacs Lisp program to copy passwords to clipboard and remove them after 10s from both clipboard and kill-ring.

PDF Tools is, among other things, a replacement of DocView for PDF files. The key difference is, that pages are not pre-rendered by e.g. ghostscript and stored in the file-system, but rather created on-demand and stored in memory.

This rendering is performed by a special library named, for whatever reason, poppler, running inside a server program. This program is called epdfinfo and its job is it to successively read requests from Emacs and produce the proper results, i.e. the PNG image of a PDF page.

Actually, displaying PDF files is just one part of PDF Tools. Since poppler can provide us with all kinds of information about a document and is also able to modify it, there is a lot more we can do with it.

[shaarli save link does not work here under Firefox 45.5.1/Windows or Firefox 51.0.1 (64-bit) on xubuntu, because github does not allow "foreign" JavaScript]

What follows is my vast, unpublished 1979 "Mother of All Multics Emacs papers" from which all of my lesser and greater Emacs papers, published, internal, and unpublished, were ultimately excerpted, including Prose and CONS: A Commercial Text-Processing System in Lisp in the 1980 Lisp Conference proceedings and the 1980 Honeywell conference paper. It's about time to expose it, and the WWW/HTML is now the ideal vehicle.

Displaying ISO week numbers in CalendarMode.

Portacle is a PORTAble Common Lisp Environment. What this means is that it is a fully featured integrated development environment for use with Common Lisp that runs on all major platforms and can even be put onto a USB stick to carry around. For Linux, OS X and Windows.
Used to be on https://github.com/Shinmera/portacle

This is a QR code generator for Emacs, written in Emacs Lisp. It's a CommonLISP-to-EmacsLISP port of the cl-qrencode package by jnjcc
See also https://github.com/ruediger/qrencode-el (added 2021-09-13)

Endless Parentheses is a blog about Emacs. It features concise posts on improving your productivity and making Emacs life easier in general.