This inventory tracker app that runs entirely in the browser with yjs, and syncs over peer.js, that I have not been very good about using lately

https://eternityforest.github.io/Stuffer/

Not an app, but a productivity system, partially refined by telling AI every time I forgot anything and asking for research references on human error that are relevant to that specific mistake:

https://github.com/EternityForest/THUNDERWARS