3D DOM viewer, copy-paste this into your console to visualise the DOM topographically. - DOM3D.js

Building on the Fediverse is hard. Here is a list of ActivityPub and other developer resources that have been helpful in developing Emissary.
This is not a canonical or official list by any means, but hopefully this list of bookmarks is valuable to others who are building their own Fediverse apps.

Instead of asking over and over again if she is working tomorrow. I just consult her very organised calendar — and when she wants to check if I'm free she looks at my very empty calendar.