Select Star SQL

made by kao, submitted by sydney
This is a great, thoughtful, free, book-sized resource for learning SQL that lets you run queries on a real dataset.

An AR prototype using RC's logo as the marker

made by Tamrat, submitted by nicholasbs
It's simple, and yet it looks like magic.

Raccoon, a digital wellbeing app made with Electron

made by kkitay, submitted by rachel
I always forget to look up from my computer. Or stretch. Or breathe. This app helps, and this blog post does a great job of explaining how it's built. And come on, look at how adorable the logo is!