“About Gwern § Coding Contributions”, 2009-08-05 (; similar):
Who am I online & what have I done? Contact information; sites I use; computers and software tools; things I’ve worked on; psychological profiles
I mostly contribute to projects in Haskell, my favorite language; I have contributed to non-Haskell projects such as StumpWM, Mnemosyne, GNU Emacs18 etc. but not in major ways, so I do not list them here. After starting this website, I wound down my regular coding activities in favor of my writings; when I code, now it tends to be tools documented or hosted on this website (eg. Archiving URLs, Resorter) or integrated into writeups (eg. Generating Anime Faces with StyleGAN). For that code, you can browse by language tag: C/CSS/Haskell/JS/Python/R/Scheme/shell.
Below is a more detailed list of my old Haskell contributions, most of which is now of only historical interest.