Few months ago, I worked on a Chrome extension to make my life easier when DMing D&D using DnD Beyond characters.

D&D Beyond Campaign DM Screen
DM Screen Extension for D&D Beyond. This extension extends the campaign page to turn it into a DM screen.

The extension has a simple goal: providing the characters's stats in a useful way and refreshing the data when the character's sheets are updated.

Without the extension

With the extension

When using the embedded version of the DM screen:

When using the popup version:

This is the extension "live":