Allagan Studies’ stats interval sheets updated & ported over to the web for Shadowbringers. Useful for finding out how far you are from or over the next substat tier, or just to understand what your stats are doing.
Second round of Allagan Studies’ document on general game formulae & how to use them. Go to resource if you’re wanting to math things out for good rotation sheet or to build a faithful rotation/combat simulator. Also ported to the web for Shadowbringers.
Black Mage Specific
A comprehensive spreadsheet thoroughly comparing Sharpcast use cases at various Spell Speed values and their potency totals. Lots of numbers.
An in depth overview of Thunder and Thundercloud uses for optimal thunder damage by Dialace Starvy.
This gear planner is a tool similar both to Ariyala and relative gear calculators.
It lets you create gear sets to compare, even with level syncing so you can compare different gear sets for UCoB and UWU.