spreadsheet of Matt Colville's Running the Game
Collections and Generators
Eigengrau's Generator - A generator unlike any other.
d100 d100s from this sub!
Random generator to create millions of combinations of random worlds, magic items, quests and other things for 5e DMs.
My Excel sheet for randomly generating almost everything a DM needs to run a town (NPCs, shop names, store inventories, prices, etc.)
Index of d100 Lists
Massive DM's Toolkit - Online Resources
The Complete Hippo (2019 Update)
I compiled and sorted my saved D&D links
r/Dndspeak
r/DnDBehindTheScreen - History of Theme Months at BTS