There are 2 repositories under dndbeyond topic.
A DM screen that pulls information from D&D Beyond
Customizable themes for dndbeyond and its character sheets. Default settings are a dark mode. Now includes custom dice coloration.
Coding challenge for front-end developers
A node module for generating magic item shops for D&D 5e
Custom css theme for dndbeyond Character Sheets
A Chrome extension that grabs your Dungeons & Dragons character's stats from various platforms like D&D Beyond and Harmless Key.
Browser extension for exporting and later syncing D&D Beyond characters and monsters to Roll20.
A better spell point tracker userscript for DnDBeyond
A TaleSpire Symbiote to watch the D&D Beyond Game Log from a Campaign and report the rolls into TaleSpire.
Alfred Workflow for D&DBeyond Monsters
Adds button to DnDBeyond to filter sources you own. Works with Violentmonkey extension.
Dark mode for DnDBeyond via Tampermonkey script.
With this project you can generate "rollable" JSON data to popullate your D&D Beyond homebrew.