Maya & 3DMax

FumeFX
https://www.afterworks.com/FumeFXMaya.asp

umeFX to UE4 Tutorial: Smoke/Grenade effect using flipbooks.
https://www.youtube.com/watch?v=CKbgMxLiRJM

Animation

Cascadeur: Physics-Based Character Animation
https://80.lv/articles/cascadeur-physics-based-character-animation/

The artist’s software for animation drawing and painting.
https://www.clipstudio.net

akeytsu
https://www.unrealengine.com/marketplace/en-US/slug/akeytsu

Photoshop

3D Map Generator - Atlas - From Heightmap to real 3D map
https://graphicriver.net/item/3d-map-generator-atlas-from-heightmap-to-real-3d-map/22277498

Perspective Tools v2 (from Photoshop CS6 to the newest)
https://gumroad.com/l/MESl

Painting

The artist’s software for animation drawing and painting.
https://www.clipstudio.net

3D Painting

ArmorPaint is a software for 3D PBR texture painting
https://github.com/armory3d/armorpaint

“Bring your paintings to animated life.”
https://ebsynth.com/

VFX

B3D Plugin: ClothFX v4
https://gumroad.com/l/iHFuk

Terrain & Landscape

Hydraulic Erosion
https://sebastian.itch.io/hydraulic-erosion

Generate, design, blend, mix, paint & sculpt, erode and simulate in real-time.
https://www.world-creator.com/

UI

Build Your Ajax Loading Icons with SVG / CSS / GIF / APNG !
https://loading.io/

iconfinder
https://www.iconfinder.com

Textures

TexTools is a UV and Texture tool set for 3dsMax created several years ago. This open repository will port in time several of the UV tools to Blender in python.
https://github.com/SavMartin/TexTools-Blender

Materials

Ultimate Trim Generator: Substance Designer/Painter
https://gumroad.com/l/ByFF

Mesh

GreebleFX: Non-destructive Greeble Generator
https://blendermarket.com/products/greeblefx-non-destructive-greeble-generator

Sprite

SpriteStack
https://store.steampowered.com/app/1106180/SpriteStack/

Blogs

https://halisavakis.com/category/technically-art/

http://www.creativewithjaakko.com/

Tutorials

Animation

The Animation of Guilty Gear Xrd & Dragon Ball FighterZ - New Frame Plus
https://www.youtube.com/watch?v=kZsboyfs-L4

英雄之所以是英雄，是他不知道有一个阴谋在他身后。——张锐锋《古战场》