You Won’t Believe This One Weird CPU Instruction!

made by vaibhavsagar, submitted by Mai
A brief history of the uses of popcount (aka 'the NSA instruction'), delivered at !!Con 2019.

Fandomized Algorithms

made by lkuper, alexrudnick, submitted by Mai
In honor of AO3's recent Hugo Award, a fandom number generator written in Python by Lindsey Kuper and Alex Rudnick. The accompanying paper is recommended.

AI-generated piano improvisation

made by pchatha, submitted by Mai
Using several years of Yamaha's International Piano-e-Competition dataset for training, this AI generates classical piano MIDI performances.

PsychOut: a live shader editor

made by catilac, submitted by Mai
PsychOut lets you write and edit Metal shaders and see the results in real time.

All is all

made by Alex Calderwood, submitted by Mai
A work in progress poetry generation engine in Python. The README includes a great reading list of papers.

NY Times First Said

made by Max Bittker, submitted by Mai
A twitter bot that tracks when the New York Times publishes a word for the first time in its history!


made by lunacodes, submitted by Mai
A widget for Jewish halakhic times that pulls the user's location and outputs zemannim according to Sephardic tradition. It uses the SunCalc library to calculate the position and phase of the sun and moon.


made by stevenleeg, submitted by Mai
Co-create a playlist and groove with friends near and far on this open source clone of (RIP).

TypeScript simulation of an elevator bank in a building

made by louije, submitted by Mai
It's built in a modular way. The "world" (renderer, building state, lift behavior) is separate from the "controller" code, which determines which lift is sent to which floor when someone presses a button. See it in action at

Generalized game solver

made by Yoni, submitted by Mai
If you can program the rules, this general game solver written in Haskell can play!