Karous lil modding hub

Equipment stuff

Dawntrail Shader Reference
Substance Painter export and colorsetting resources by SB! Youtube guide is here
glTF validator for Penumbra imports
Custom body resources:
Note: I wont link the actual devkits here since they change relatively often, you'll need to join the respective bodies discord (most likely) to get the up to date devkit, I'm including TBSE stuff here tho because finding any is a crapshoot
C.K.'s Porting Tool Documentation Note: Don't actually use the blender file, but it gives you a good idea of what your workflow for upscales should look like
Tre Devkit guide by S.B.!
YAB Devkit guide by Aleks w/ Yet Another Addon docs
Bimbo Devkit overview
Google Drive with TBSE-W assets
Blender file for the TBSE and TBSE-X devkit with IVCS 2.0 support

Animations / VFX / Sound resources

Hair and Skin stuff

Applications and app resources

Blender download

XIV specific tools:
Godbert lets you root through the games files, view and extract.
XIV Animation Toolkit helps with animation mods, mostly replaced by VFXEdit but is easier to import/export with imo.
Textools which is included for completeness but you probably already have this.

GPosing

Small set of pictures and a video made by StrayCatte_xiv on twitter on how to pose the new face bones.
Image post and Video post