MathJax Buttons

Mathjax Buttons adds convenient buttons and keyboard shortcuts for those who use MathJax on SE

<kbd> markup shortcuts

Makes using the <kbd> tag a snap! This is a cross-browser userscript that adds a button and a keyboard shortcut that operate in the same manner as the other SE, editing buttons.

Better handling of indentation and the TAB key when editing posts

This user script changes the behavior of a few keys (most notably the Tab key) within the post editor to behave more like it does in IDEs or text editors