This site makes it easy and quick to draw something that looks nice, regardless of how good of an artist you are. It’s a nice blend of intimate and casual.
This is a great, thoughtful, free, book-sized resource for learning SQL that lets you run queries on a real dataset.
It's simple, and yet it looks like magic.
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!