"Get a public key, safely, starting just with someone's social media username(s).
The goal is a simple way to look up and trust keys, based on known public identities."

Note that keybase has been bought by Zoom, which is not trusted by some people. See https://alexschroeder.ch/wiki/2020-05-08_Replacing_Keybase and https://idiomdrottning.org/pgp for an alternative using free software.

Calculate CRC, generate Verilog and C code (licensed under the LGPL) for the calculation.

Password management should be simple and follow Unix philosophy. With pass, each password lives inside of a gpg encrypted file whose filename is the title of the website or resource that requires the password. These encrypted files may be organized into meaningful folder hierarchies, copied from computer to computer, and, in general, manipulated using standard command line file management utilities.
On https://hackaday.io/project/9564-rpi-zero-wifi-enabled-hardware-password-manager, a Raspberry π 0 is used to run it.

How to manage SSH Host Certificates with YubiKey NEO.

Radare project started as a forensics tool, an scriptable commandline hexadecimal editor able to open disk files, but later support for analyzing binaries, disassembling code, debugging programs, attaching to remote gdb servers, ..

A common lisp programmer writes about his projects and the tools he is using.

pkgsrc is a framework for building third-party software on NetBSD and other UNIX-like systems, currently containing over 12000 packages. It is used to enable freely available software to be configured and built easily on supported platforms (which include OS X and Cygwin).

Exploratory programming environment and documentation generator for Common Lisp.

HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.

It allows you to download a World Wide Web site from the Internet to a local directory, building recursively all directories, getting HTML, images, and other files from the server to your computer. HTTrack arranges the original site's relative link-structure. Simply open a page of the "mirrored" website in your browser, and you can browse the site from link to link, as if you were viewing it online.

MXE (M cross environment) is a Makefile that compiles a cross compiler and cross compiles many free libraries such as SDL and Qt. Thus, it provides a nice cross compiling environment for various target platforms (including Windows).