- Introduction to COBOL — a 1999 web site (!) with slides from a University of Limerick course. IBM will offer free (presumably more modern) training.
- zoombot — a highly advanced AI to handle Zoom calls.
- storybook.js — open source toolkit and sandbox to build UI components in isolation so you can develop hard-to-reach states and edge cases.
- tic-80 — a fantasy computer for making, playing and sharing tiny games.