"a ~350 page book on TeX, plain TeX, and Eplain, originally written by Paul Abrahams, Kathryn Hargreaves, and Karl Berry. It is now a free GNU package ... [a] prebuilt PDF file is available" (ib., 2019-11-10)
"proof-of-work algorithm, which has been used as a denial-of-service counter measure technique in a number of systems." (ib., 2019-11-10)
"Documents can be saved in TeXmacs, Xml or Scheme format and printed as Pdf or Postscript files. Converters exist for TeX/LaTeX and Html/Mathml. Notice that TeXmacs is not based on TeX/LaTeX." (ib., 2019-10-14)
"check what data-protecting measures a site has taken to help you exercise control over your privacy" (ib., 2019-10-11) Cf. https://github.com/andersju/webbkoll
"signal-cli provides a commandline and dbus interface for signalapp/libsignal-service-java"
"An open source Android app that offers users the opportunity to test the security of their mobile devices as well as of the mobile networks to which their devices connect." (ib., 2019-09-28)
"This tutorial will show you how to create a JavaScript-free lightbox using CSS only. To accomplish this, we will make use of the :target selector from the CSS3 spec." (ib., 2019-09-28)