software owl - a parser generator for visibly pushdown languages (try it online!) dezip - browse (and search) source code directly from an archive url
protocols and formats wmc (september 2022) - a file format which describes its own structure via webassembly (demo) sutf8 (may 2018) - a structured text encoding
games (making) many wordls (january 2022) - multiplayer wordle $2000-$3fff (december 2014) - a commodore 64 program which displays its entire memory on the screen, then draws missiles into it (source code)
conceptual web stuff hypernav (november 2022) - hierarchical navigation ui in the band model of the hyperbolic plane (try it on your phone!) arithmesnek (may 2022) - encoding a snake game in a single integer window-scatter (january 2021) - window management idea numberbrush (january 2018) - a steadily-increasing number is repurposed into a felt-like interactive material 4x4 (pre-2018) - fun with hover states